EP1988251A2

EP1988251A2 - Blind fittings and tools, components and method therefor

Info

Publication number: EP1988251A2
Application number: EP20080155508
Authority: EP
Inventors: Neil Wilson
Original assignee: Turnils UK Ltd
Current assignee: Turnils UK Ltd
Priority date: 2007-04-30
Filing date: 2008-04-30
Publication date: 2008-11-05
Also published as: GB2448878B; EP1988251A3; GB0708325D0; GB2448878A

Abstract

A tool (100) for use in locating in its position of use a supporting device for a window blind apparatus, the supporting device comprising at least one laterally projecting portion adapted to slide in use between a glass pane and a resilient retaining bead which bears against the glass pane, the tool comprising a body portion (102) and a cavity (118A,118B) configured to receive therein a first portion of said supporting device such that the laterally projecting portion of the supporting device projects from the body portion of the tool, whereby the supporting device can be urged by use of the tool to move in a direction effective to insert said laterally projecting portion between the glass pane and the bead. Also disclosed are a method of using the tool and a kit of parts including the tool.

Description

The present invention relates in general to blinds (or shades) such as roller blinds, vertical blinds, Roman blinds and, in particular, to Venetian blinds and pleated blinds for use primarily at glazed windows, and to apparatus by which such blinds are mounted in their location of use, and in particular to tools apparatus or equipment (hereinafter "tool" or "tools") which are advantageously used in the assembly, mounting or fitting of such blinds and to methods of their use. The blinds and apparatus of the invention with which the tools of the invention are of particular use are applicable primarily to apertures glazed with a transparent, translucent, coloured or colourless glass pane or panel, but may also be used with other suitable glazing materials such as transparent, translucent, coloured or colourless plastic sheets.
Unless the context requires otherwise, the terms "glass", "glass pane", "glass panel" "glazed" and "glazing" as used herein are intended to include or encompass glass and/or other suitable glazing materials. The term "glazed window" refers primarily to external windows of buildings, such as houses and offices and also includes conservatories. Further, unless the context requires otherwise, "glazed window" as used herein encompasses other glazed apertures such as glazed doors, glazed internal partitions (such as in offices) and other like locations
Most blinds comprise a panel or a group of panels of shading material the configuration of which can be changed by the user to shade or expose the window. Thus a roller blind comprises a web of fabric which in the shading configuration lies approximately parallel to the window and in the exposing condition is wound around a rigid roller or the like conventionally arranged near the top of the window. Vertical blinds include a plurality of panels or slats which hang vertically from a head rail conventionally mounted near the top of the window. Mechanisms are provided, primarily in the head rail, by which the panels can be rotated about their longitudinal axes and by which the panels can be moved along the head rail laterally with respect to the window, by both of which means the degree of shading of the window is adjusted.
Venetian blinds, which are also known as slatted blinds, are also well known and conventionally comprise an upper supporting structure in the form of a head rail from which depend two or more spaced apart ladders. The ladders comprise a pair of longitudinal cords or threads aligned in use substantially parallel to the window with a plurality of lateral threads inter-connecting the longitudinal cords at regular intervals. The lateral threads support respective laths or slats which form the shading part of the blind. The slats may rest on the lateral threads without any attachment, or some or all of the slats may be directly connected to respective lateral threads.
Mechanisms are conventionally provided by which the blind can be raised and lowered so that it can adopt configurations in which the window is wholly shaded, partially shaded or unshaded. Such mechanisms will normally include at least one lift cord which may pass through holes defined in the slats of the blind or may, for example, run behind the slats. In addition, mechanisms are provided by which the slats can be tilted or inclined out of a nominally horizontal alignment into alignments tending towards the vertical, thereby to vary the degree of shading provided by the blind. Tilting is conventionally effected by adjusting the configurations of the longitudinal cords of the ladders.
Pleated blinds are also well known and comprise a supporting structure in the form of a master rail. The master rail is often located in use at an upper portion of the glazed aperture, but this is not necessarily so. For example, the master rail can, in some circumstances be mounted at the side or lower part of the glazed aperture. A web of fabric which is used to shade the window is supported by the master rail. The fabric is constructed so that it includes a number of concertina-like folds ("pleats"), whereby the web can be adjusted from a compact configuration in which the window is exposed to an extended configuration where the window is shaded. Support cords pass through or behind the folded web and normally are attached to a moveable bar which is raised and lowered as the web is adjusted between its configurations.
Thus each type of blind includes a substantially rigid element, member or assembly such as a master rail or head rail from which the shading portion of the blind is, directly or indirectly, supported. In the case of a roller blind, the roller or tube about which the blind is operationally wound, together with mounting brackets at either end of the roller, forms such a substantially rigid assembly. In the case of Venetian, vertical and pleated blinds the head rail or master rail forms such a substantially rigid element. The element, member or assembly (hereinafter "head assembly") of each respective blind conventionally is mounted at a window or other location of use by securing the head assembly directly or indirectly to the window frame or surrounding portion of wall, lintel etc by use of screws or the like. Although this will normally provide a secure attachment, it is often time consuming and inconvenient. In addition, it can be disadvantageous, for example in that holes or marks are left in the frame when the blind is removed. This is especially so where the blind is mounted to a plastic (typically uPVC) frame where the holes cannot be readily filled or otherwise repaired.
In order to overcome this and other deficiencies, it has been proposed to mount a Venetian blind or pleated blind directly to the window frame without the use of screw fixings or the like. One proposed solution described in GB 2 423 328 employs metal brackets which include a portion which is forced between the rubber bead of the window frame and the window glass. A pre-assembled rectangular frame which carries the blind is then mounted on the brackets by means of a push-fit arrangement. This arrangement is disadvantageous in a number of respects. Significantly, because the depth of the window frame between the surface of the glass and the inner face of the frame varies between different window designs, and because the metal brackets are available in only a limited range of sizes, a significant and aesthetically undesirable gap is left between the blind frame and the window frame. Also, forces due to the inherent weight of the blind and also operation forces of the blind (which principally occur when raising or lowering the blind) are transferred via the frame to the metal brackets and thence to the glass. This potentially transfers stresses to the glass very locally through the edges of the metal brackets. Further, the size of the frame is significant in reducing the effective glazed area of the window. For example, for a window with a nominal 1m x 1m glazed area, the frame reduces the visible glazed area to 0.95m x 0.95m.
An alternative solution is described in our co-pending application WO2008/015440 which provides a means of attachment of a blind to a window frame, principally, but not exclusively, a uPVC window frame, which does not employ permanent fixings (such as screw fixings) and which avoids the disadvantages outlined above.
It is noted that the attachment of blinds to windows using brackets having a portion which slides between a window bead and the window glass is, in general terms known, primarily for attaching internal blinds to the windows of automobiles.
The arrangement as described in WO2008/015440 provides a system for mounting a blind including a head assembly at a glazed aperture, the glazed aperture comprising a frame, a glass pane retained in the frame and a flexible or resilient bead disposed between the glass pane and the frame which bead bears against the glass pane; the system comprising:

first and second mounting components each including
a base portion having a base surface configured to rest in use against the glass pane,
a post portion configured to extend in use approximately orthogonally with respect to the plane of the glass pane; and
a mounting bracket portion having at least one laterally extending planar finger configured to slide in use between the bead and the glass pane; and
first and second connecting components configured operatively to attach the blind head assembly to the respective post formations.

In particularly preferred embodiments of WO2008/015440 , the mounting bracket portions are adapted to be arranged in use at respective upper corners of the frame of the glazed aperture.
The mounting bracket portions preferably each include first and second co-planar fingers arranged to extend orthogonally and configured to slide in use between the bead and the glass pane at adjacent sides of the frame.
The respective mounting components may be unitary.
In another embodiment of WO2008/015440 the first and second mounting components are non-unitary and respectively comprise:

first and second mounting formations each including a said base portion having a base surface configured to rest in use against the glass pane, and a said post portion configured to extend in use substantially orthogonally with respect to the plane of the glass pane; and
first and second mounting brackets, respectively constituting the mounting bracket portions, and each comprising a first portion including attachment means by which the mounting bracket and post portion of the mounting formation are attached in use and a second portion having said at least one laterally extending planar finger configured to slide in use between the bead and the glass pane.

The attachment means may comprise an aperture defined in the first portion of the mounting bracket through which aperture a respective post portion operatively passes.
The respective post portions, apertures of the first portions and the base portions of the mounting formations are preferably so sized and/or configured that the base portion cannot pass through the aperture.
Preferably, for attachment of the blind head assembly to the respective post formations, the respective connecting components are operatively slidable along the post portions. In this way, the position of the blind head assembly with respect to the frame is adjustable.
In preferred constructions of WO2008/015440 , the connecting components each comprise a socket into which the post portion operatively slides. Alternatively, the respective post portions of the mounting formations may define sockets into which a protruding formation of the respective connecting component is slidably received.
Preferably the system of WO2008/015440 further comprises fixing means which co-operate with the respective connecting component and post portion to inhibit or prevent removal of the connecting component from the post portion. Fixing means may include a latching arrangement which resists removal of the connecting component, or permanent or semi-permanent fixing means such as a fixing screw, bolt or pin.
Preferably the system further comprises at least first and second spacing elements of predetermined depth configured to be located in use respectively between the mounting bracket portion or mounting bracket and the connecting component.
In preferred constructions the system of WO2008/015440 further comprises:

first and second longitudinally extensive side members configured to be mounted at the sides of the glazed window thereby to cover the bead and to extend from proximate the mounting bracket to proximate the lowermost part of the glazed aperture; and
first and second retaining means adapted to retain respective the side members in position.

Preferably the retaining means comprise first and second clips each including an engagement portion configured to engage the side member and a finger portion configured to slide in use between the bead and glass pane.
Preferably the system of WO2008/015440 further comprises further (i.e. third and fourth) mounting brackets each comprising a first portion having at least one laterally extending planar finger configured to slide in use between the bead and the glass pane, and a second portion configured for mounting an additional component.
In preferred constructions the second portion of the further (third and fourth) mounting brackets includes an attachment formation extending in use substantially orthogonally with respect to the plane of the glass pane.
Preferably the system further comprises a spacer mounted on the attachment formation.
Preferably lower end portions of the side members are, operatively, respectively in juxtaposition with the further (third and fourth) mounting brackets.
More preferably, lower end portions of the side members engage the respective further (third and fourth) mounting brackets, such as by one of the mounting bracket or the side member including a slot into which the other of the mounting bracket or the side member is received. Thus, preferably the lower parts of the side members and the further (third and fourth) mounting brackets respectively include operatively co-operating engagement formations.
In a second embodiment of WO2008/015440 there is provided a blind assembly mounted at a glazed aperture, the glazed aperture comprising a frame, a glass pane retained in the frame and a flexible or resilient bead disposed between the glass pane and the frame which bead bears against the glass pane; the blind assembly comprising:

a blind head assembly from which a shade portion of the blind depends;
first and second mounting components each including:
- a base portion having a base surface resting against the glass pane,
- a post portion extending approximately orthogonally with respect to the plane of the glass pane; and
- a mounting bracket portion having at least one laterally extending planar finger disposed between the bead and the glass pane; and
first and second connecting components by means of which the blind head assembly is attached to the respective post formations.

Preferably the mounting bracket portions are arranged at respective upper corners of the frame of the glazed aperture.
In preferred constructions of this aspect of WO2008/015440 the mounting bracket portions each include first and second co-planar fingers extending orthogonally and arranged between the bead and the glass pane at adjacent sides of the frame.
In one embodiment of the above aspect of WO2008/015440 , the respective mounting components are unitary.
In another embodiment of the above aspect of WO2008/015440 , preferably the first and second mounting components are non-unitary and respectively comprise:

first and second mounting formations each including a said base portion having a base surface resting against the glass pane, and a said post portion extending substantially orthogonally with respect to the plane of the glass pane; and
first and second mounting brackets, respectively constituting the mounting bracket portions, and each comprising a first portion including attachment means by which the mounting bracket and post portion of the mounting formation are attached and a second portion having said at least one laterally extending planar finger disposed between the bead and the glass pane.

Preferably the attachment means comprise an aperture defined in the first portion of the mounting bracket through which aperture a respective post portion passes.
In preferred embodiments of this aspect of WO2008/015440 , the respective post portions, apertures of the first portions and the base portions of the mounting formations are so sized and/or configured that the base portion cannot pass through the aperture.
Preferably, for attachment of the blind head assembly to the respective post formations, the respective connecting components are operatively slidable along the post portions. In this way, the position of the blind head assembly with respect to the frame is adjustable.
In preferred constructions the connecting components each comprise a socket within which the post portion is slidably engaged. Alternatively, the respective post portions of the mounting formations may define sockets into which a protruding formation of the respective connecting component is slidably received.
Preferably the blind assembly of WO2008/015440 further comprises fixing means which co-operate with the respective connecting component and post portion to prevent or inhibit removal of the connecting component from the post portion. Fixing means may include a latching arrangement which resists removal of the connecting component, or permanent or semi-permanent fixing means such as a fixing screw, bolt or pin.
Preferably the blind assembly further comprises at least first and second spacing elements of predetermined depth arranged respectively between the mounting bracket portion or mounting bracket and the connecting component.
In preferred constructions the blind assembly of WO2008/015440 further comprises:

first and second longitudinally extensive side members mounted at the sides of the glazed window thereby to cover the bead and extending from proximate the mounting bracket to proximate the lowermost part of the glazed aperture; and
first and second retaining means which retain respective the side members in position.

Preferably the retaining means comprise first and second clips each including an engagement portion which engages the side member and a finger portion which slides between the bead and glass pane.
Preferably the blind assembly of WO2008/015440 further comprises further (third and fourth) mounting brackets each comprising a first portion having at least one laterally extending planar finger configured to slide in use between the bead and the glass pane, and a second portion configured for mounting an additional component.
Preferably the second portion of the further (third and fourth) mounting brackets includes an attachment formation which extends substantially orthogonally with respect to the plane of the glass pane.
Preferably the blind assembly further comprises a spacer mounted on the attachment formation.
Preferably lower end portions of the side members are respectively in juxtaposition with the further (third and fourth) mounting brackets.
More preferably, lower end portions of the side members engage the respective further (third and fourth) mounting brackets, such as by one of the mounting bracket or the side member including a slot into which the other of the mounting bracket or the side member is received. Thus, preferably the lower parts of the side members and the further (third and fourth) mounting brackets respectively include operatively co-operating engagement formations.
According to a further aspect of WO2008/015440 there is provided a method of mounting a blind including a head assembly at a glazed aperture, the glazed aperture comprising a frame, a glass pane retained in the frame and a flexible or resilient bead disposed between the glass pane and the frame which bead bears against the glass pane; the method including the steps of:

providing first and second mounting formations each including a base portion having a base surface and a post portion configured to extend in use approximately orthogonally with respect to the plane of the glass pane; providing first and second mounting brackets each comprising a first portion including attachment means and a second portion having at least one laterally extending finger; and providing first and second connecting components attaching the respective mounting formations to the mounting brackets, placing the base surface of the base portions against the glass pane and sliding the fingers between the glass pane and the bead,
attaching the connecting components to respective side parts of the head assembly and mounting the respective connecting components on the post portions of the mounting formations.

In specific embodiments and applications, the present invention provides a tool for use in assembling, mounting or fitting of systems and assemblies and for use in methods WO2008/015440 as outlined above.
According to a first aspect of the present invention there is provided a tool for use in locating in its position of use a system for mounting a blind at a glazed aperture, the blind including a head assembly and the glazed aperture comprising a frame, a glass pane retained in the frame and a flexible or resilient bead disposed between the glass pane and the frame which bead bears against the glass pane; the system comprising:

first and second supporting devices in the form of first and second mounting components each including
a base portion having a base surface configured to rest in use against the glass pane,
a post portion configured to extend in use approximately orthogonally with respect to the plane of the glass pane; and
a mounting bracket portion having at least one laterally extending planar finger configured to slide in use between the bead and the glass pane; and
first and second connecting components configured operatively to attach the blind head assembly to the respective post formations,

According to a second aspect of the present invention there is provided a tool for use in locating in its position of use at least one supporting device for a window blind apparatus at a window frame, the, or each, supporting device comprising at least one laterally projecting portion adapted to slide in use between a glass pane and a resilient retaining bead which bears against the glass pane, the tool comprising a body portion and at least one cavity configured to receive therein a first portion of a said supporting device such that the laterally projecting portion of the supporting device projects from the body portion of the tool, whereby the supporting device can be urged by use of the tool to move in a direction effective to insert said laterally projecting portion between the glass pane and the bead until the supporting device attains its use position.
In one preferred embodiment the tool comprises a top wall, a base wall and at least one side wall extending between the top wall and the base wall, said at least one cavity opening proximate the base wall and extending towards the top wall.
It is particularly preferred that the, or each, cavity is so disposed in the tool with respect to one or more side walls that when, in use, a predetermined side wall or walls, or portion thereof abuts a complementary portion of the window frame, the supporting device is in its position of use. Preferably also the cavity is configured such that, when the supporting device attains its use position, the tool is separable from the supporting device without displacing the supporting device from said use position.
In preferred variations said at least one cavity is configured to receive respective first portions of first and second supporting devices.
In further preferred variations the tool comprises first and second cavities configured to receive respective first portions of first and second supporting devices.
In another preferred embodiment of this second aspect, said laterally projecting portion of the supporting device is a finger. Preferably the finger is substantially planar.
In further preferred embodiments of the second aspect of the invention the first portion of the supporting device comprises an upstand portion attached, directly or indirectly, to the laterally projecting portion. Preferably the upstand portion is configured to extend in use approximately orthogonally with respect to the glass pane and more especially the upstand portion is a post portion.
In this second aspect of the invention it is particularly preferred that the body portion is configured to be gripped by a user's hand. For example, the tool is preferably sized to be easily accommodated by a user's hand and may desirably include gripping portions, such as suitably shaped depressions or projections, such as shaped (e.g. inwardly curved) regions of one or more side walls.
It is particularly preferred that said cavity has one or more internal wall surfaces configured substantially to conform to at least a portion of the first portion of the supporting device.
In further preferred variations of this second aspect of the invention, the tool is configured for use with a supporting device further comprising a base portion having a base surface configured to rest in use against the glass pane and from which base portion the first portion extends.
In preferred embodiments, the tool is constructed to enable the insertion of supporting devices intended for different locations with respect to the window frame. Thus, in a preferred embodiment, the tool is further configured for use with a second supporting device comprising at least one laterally projecting portion adapted to slide in use between a glass pane and a resilient retaining bead which bears against the glass pane, the tool comprising a second cavity configured to receive therein a first portion of said second supporting device such that the laterally projecting portion of the second supporting device projects from the body portion of the tool whereby the second supporting device can be urged by use of the tool to move in a direction effective to insert said laterally projecting portion of the second supporting device between the glass pane and the bead.
Preferably in this preferred embodiment said second cavity has one or more internal wall surfaces configured substantially to conform to at least a portion of the circumferential shape of a said first portion of the second supporting device.
Preferably in this embodiment also said laterally projecting portion of the supporting device is a finger and more preferably the finger is substantially planar.
In preferred variations of this embodiment the first portion of the second supporting device comprises an upstand portion attached, directly or indirectly, to the laterally projecting portion. In preferred constructions the upstand portion is configured to extend in use approximately orthogonally with respect to the glass pane. Preferably the upstand portion is a post portion.
Preferably the second supporting device further comprises a base portion having a base surface configured to rest in use against the glass pane and from which base portion the first portion extends.
In a preferred embodiment of the first aspect of the invention the tool further comprises a second cavity having one or more internal wall surfaces configured substantially to conform to at least a portion of the circumferential shape of a second said post portion such that the said second post portion is receivable into said second cavity. The first and second cavities may be of the same type, or different types.
Preferably the first and second cavities are located proximate opposed sides of the tool.
In preferred embodiments the tool comprises a glass pane contacting surface which is substantially planar, the cavity or cavities extending from said glass pane contacting surface.
In alternative embodiments the tool the cavity (cavities) is (are) defined by a substantially planar web portion and the tool comprises a glass pane contacting surface which is substantially planar, the respective planes of the web portion and the glass pane contacting surface being in at least approximately parallel and spaced apart relation, whereby the web portion is spaced apart from the glass pane when the tool is in its position of use.
Preferably in the latter embodiment the web portion is spaced apart from the glass pane contacting surface by a distance approximately equal to the height of the base portion of the (or, respectively, each) supporting device.
In further preferred embodiments of the first aspect of the invention the said system for mounting a blind at a glazed aperture further comprises at least a third mounting component comprising a first portion having at least one laterally extending planar finger configured to slide in use between the bead and the glass pane, and a return portion configured for mounting an additional component, the tool further comprising at least a third cavity having one or more internal wall surfaces configured substantially to conform to at least a portion of the circumferential shape of a said return portion such that the said return portion is receivable into said third cavity.
In further preferred embodiments said system comprises a fourth mounting bracket and wherein the tool comprises a fourth cavity having one or more internal wall surfaces configured substantially to conform to at least a portion of the circumferential shape of the return portion of said fourth mounting component such that the said return portion of the fourth mounting component is receivable into said fourth cavity.
Preferably in these embodiments the further (third and fourth) cavities are located proximate opposed sides of the tool.
Preferably a first cavity and a third cavity are provided in spaced apart relation proximate one side of the tool and a second cavity and a fourth cavity are provided in spaced apart relation proximate a second side of the tool.
In still further embodiments preferably the tool includes an approximately square or approximate rectangular base face and the respective cavities are provided proximate respective corners of said base face.
In particularly preferred embodiments the first and second cavities are of a first type and the third and fourth cavities are of a second type in conformity respectively with the differing shapes of the post portions of the first and second mounting components and the return portions of the further (third and fourth) mounting brackets.
In a further variation of the first aspect of the invention, the system further comprises:

at least a first (and preferably a second) longitudinally extensive side member configured to be mounted at the sides of the glazed window thereby to cover the bead and to extend from proximate the mounting bracket portion to proximate the lowermost part of the glazed window; and
first (and preferably second) retaining means adapted to retain the (or each) side member in position.

Preferably in the second (and also the first) aspect of the invention the first and second supporting devices are both of the same type. In this case, the first and second supporting devices may be functionally and structurally similar, but not identical. For example, the supporting devices, or parts thereof, may be mirror images, for mounting at opposed corners of the window frame.
Thus in a preferred variation, the first and second supporting devices are not identical and the respective first and second cavities of the tool are differently configured for each respective first portion of the supporting devices.
In further preferred embodiments the tool is further configured for use with at least a third supporting device, said third supporting device comprising a first portion having at least one laterally extending projecting portion configured to slide in use between the bead and the glass pane, and a return portion configured for mounting an additional component, the tool further comprising at least a third cavity having one or more internal wall surfaces configured substantially to conform to at least a portion of the circumferential shape of a said return portion such that the said return portion is receivable into said third cavity.
More preferably the tool is configured for use with a fourth supporting device said fourth supporting device comprising a first portion having at least one laterally extending projecting portion configured to slide in use between the bead and the glass pane, and a return portion configured for mounting an additional component, the tool further comprising at least a fourth cavity having one or more internal wall surfaces configured substantially to conform to at least a portion of the circumferential shape of a said return portion such that the said return portion is receivable into said fourth cavity.
Preferably in these embodiments the first and second supporting devices are of a first type and the further (third and fourth) supporting devices are of a second type and wherein the respective first and second and third and fourth cavities are differently configured for conforming with a respective first or second, or third or fourth, supporting device.
In preferred variations the return portion of the third supporting component is substantially planar and the third cavity of the tool comprises a slot sized substantially to conform with said return portion.
In further preferred variations the return portions of the further (third and fourth) supporting components are substantially planar and the third and fourth cavities of the tool each comprise a slot sized substantially to conform with a respective said return portion.
In embodiments of the apparatus of the second aspect of the invention the window blind apparatus further comprises:

at least a first (and preferably a second) longitudinally extensive side member configured to be mounted at the sides of the glass pane thereby to cover the bead and to extend from proximate the use position of the supporting device to proximate the lowermost part of the glass pane; and
first (and preferably second) retaining means adapted to retain the (or each) side member in position.

According to a third aspect of the invention there is provided a kit of parts for use in locating a window blind apparatus, the kit comprising:

a tool as defined in the first aspect of the invention and embodiments thereof, and
at least first and second supporting devices each comprising at least one finger adapted to slide between a glass pane and a resilient retaining bead which bears against the glass pane and a post portion attached, directly or indirectly, to the finger portion and configured to extend in use approximately orthogonally with respect to the glass pane.

According to a fourth aspect of the invention there is provided a kit of parts for use in locating a window blind apparatus, the kit comprising:

a tool as defined in the second aspect of the invention and embodiments thereof, and
at least first and second supporting devices each comprising at least one laterally projecting portion adapted to slide between a glass pane and a resilient retaining bead which bears against the glass pane and a first portion attached, directly or indirectly, to the finger portion and configured to be received in a cavity of the tool.

In a preferred embodiment according to the fourth aspect of the invention, said laterally projecting portion of the supporting device is a finger and preferably the finger is substantially planar.
Preferably in the fourth aspect of the invention the first portion of the supporting device comprises an upstand portion attached, directly or indirectly, to the laterally projecting portion.
Preferably the upstand portion is configured to extend in use approximately orthogonally with respect to the glass pane and more preferably the upstand portion is a post portion.
In particularly preferred embodiments of the third and fourth aspects of the invention the body portion is configured to be gripped by a user's hand.
Preferably in these embodiments said cavity has one or more internal wall surfaces configured substantially to conform to at least a portion of the first portion of the supporting device.
In further embodiments of the third and fourth aspects of the invention the supporting devices comprise respective first and second mounting components each including

a base portion having a base surface configured to rest in use against the glass pane,
a post portion configured to extend in use approximately orthogonally with respect to the plane of the glass pane; and
a mounting bracket portion including said at least one finger configured to slide in use between the bead and the glass pane

Preferably in this embodiment said at least one finger is a laterally extending substantially planar finger.
Preferably the kit of parts further comprises first and second connecting components configured operatively to attach a blind head assembly to the respective post formations.
Preferably the mounting components include any one or combination of features of the mounting components as defined in WO2008/015440 and as hereinabove described.
Preferably in the kit of parts the connecting components include any one or combination of features of the connecting components as defined in WO2008/015440 and as hereinabove described.
A further embodiment of the third and fourth aspects of the invention further comprises further (third and fourth) supporting devices which further (third and fourth) supporting devices are of a different type to the first and second supporting devices.
Preferably the further (third and fourth) supporting devices include any one or combination of features of the mounting brackets as defined in WO2008/015440 and as hereinabove described.
In a particularly preferred embodiment the kit of parts further comprises at least a first (and preferably a second) longitudinally extensive side member configured to be mounted at the sides of the glass pane thereby to cover the bead and to extend from proximate the use position of the supporting device to proximate the lowermost part of the glass pane; and
first (and preferably second) retaining means adapted to retain the (or each) side member in position.
Preferably in this embodiment the or each side member includes any one or combination of the features of the side members as defined in W02008/015440 and as hereinabove described.
Preferably the or each retaining means includes any one or combination of the features of the retaining means as defined in W02008/015440 and as hereinabove described.
According to a fifth embodiment of the invention there is provided a method for use in locating in its position of use a supporting device for a window blind apparatus, the supporting device comprising at least one laterally projecting portion adapted to slide between a glass pane and a resilient retaining bead which bears against the glass pane and a first portion configured for mounting, directly or indirectly, the blind apparatus, the method comprising providing a tool as defined in the first or second aspect of the invention, inserting into a suitably configured cavity of the tool said first portion and moving the tool thereby to urge the supporting device in a direction effective to insert said finger between the glass pane and the bead.
For a better understanding of the invention and to show how the same may be carried into effect, reference is made, by way of example only, to the following drawings, in which:

Figure 1 is a perspective view of a blind head rail mounted at a window by means of the system of the present invention;
Figure 2 is an exploded view of the system of Figure 1;
Figure 3 shows a portion of the head rail mounting of Figures 1 and 2 on an enlarged scale;
Figure 4 is a cross section through a combined mounting bracket, mounting formation and connecting component according to a variation of the invention;
Figure 5 is an exploded perspective view of the mounting bracket, mounting formation and connecting component of Figure 4, together with a spacer;
Figure 6 is an exploded perspective view of the mounting bracket, mounting formation, spacer and connecting component of Figure 5, viewed from the other side.
Figure 7 is a top plan view of a tool according to one embodiment of the invention;
Figure 8 is a perspective view showing the underside of a tool according to one embodiment of the invention;
Figure 9 is a bottom plan view of a tool according to one embodiment of the invention; and
Figure 10 is a perspective view showing the upper side of a tool according to one embodiment of the invention.

Referring initially to Figures 1, to 6, the following description illustrates the system, assembly and method of WO2008/015440 with which the tool of the present invention is most advantageously (but not exclusively) employed. The said system, assembly and method are described specifically in relation to the mounting of a Venetian blind, but are not confined only to Venetian blinds and include the mounting of other types of blind.
The blind in WO2008/015440 is mounted at a window frame 10. The frame 10 conventionally comprises an upper horizontal frame member 12, a lower horizontal frame member 14 and vertical side frame members 16, 18 which are connected together to form the frame 10, thereby defining upper corners 42, 44 and lower corners 43, 45. The frame defines an aperture 20 which is closed by a pane of glass 20a or other transparent or translucent material such as a sheet of light transmitting plastic. A typical frame member 12, 14, 16, 18, as illustrated, may comprise a front face 12a, 14a, 16a, 18a which is normally arranged substantially parallel to the plane of the glass pane 20a and a return face (14b, 16b) which is normally arranged approximately perpendicular to the glass pane 20 and to the front face (12a, 14a, 16a, 18a). Other configurations, especially with respect to the return face 14b, 16b, are possible, in accordance with aesthetic considerations of the frame designer. For example, the frame members 12, 14, 16, 18 may include a more complex series of faces which may be plane or curved. The glass pane 20a is retained in the frame 10 by use of a bead 22 of flexible or resilient material, such as of a rubber compound or rubber-like polymeric material. The bead 22 is arranged between the frame 10 and the glass 20a. The frame members 12, 14, 16, 18 are typically made from a plastic (normally uPVC) but other materials are also possible such as metal or wood, provided only that the glass pane 20a is retained by a bead and that there is space within the frame members to accommodate mounting means as discussed below.
Venetian or pleated blinds for mounting conventionally include a head rail or master rail 24. Other types of blind will also conventionally include a head rail, master rail or other substantially rigid element member or assembly by which the shading part of the blind is supported, for example, from which the shading part is suspended. The blind itself is not shown in the drawings for reasons of clarity. The head rail or master rail 24 typically has a decorative front face 24a which is visible to a user. Operating components of the blind such as cords, cord guides and a tilt mechanism are accommodated within the blind head rail or master rail 24. In most respects such components are ancillary to the present disclosure. Venetian and pleated blinds commonly also comprise a second rail 26 which, depending on the particular design, may be fixedly located in the window aperture opposite the head rail or master rail 24, for example, against the lower horizontal frame member 14, or may be adapted to be moved with the shading part of the blind (e.g. raised and lowered).
The system, assembly and method according to WO2008/015440 , more especially when employing the tool of the present invention allow a blind to be attached to a window frame without the use of fixing means which require a hole in, or otherwise damage, the frame. For example, screw fixings which penetrate the frame are avoided.
Referring now in particular to Figure 2 the arrangement described in WO2008/015440 includes mounting components which in the embodiment illustrated are non-unitary and consist respectively of first and second mounting brackets 28, 30 and first and second mounting formations 38, 40. The mounting brackets 28, 30 are preferably, but not essentially, made from metal. For example, the mounting brackets can be made from a suitably strong plastic which is also suitable for moulding to form the bracket. In use, the mounting brackets 28, 30 are located at the upper left and right (as illustrated) corners 42, 44 of the frame 10, that is, respectively where the frame members 12 and 16 and the frame members 12 and 18 join. The mounting brackets 28, 30 each comprise a first portion 32 which defines attachment means (see below) and a second portion 34 which includes at least one laterally projecting finger and preferably two laterally projecting fingers 36. Where the mounting bracket 28, 30 includes only a single finger, the finger may, for example, be a generally "L" shaped web, with each arm of the "L" being connected along its length to the first portion 32. Where the mounting bracket 28, 30 includes two fingers 36, the fingers 36 are in the form of planar webs which extend from the first portion 32. The fingers 36 of a given mounting bracket 28, 30 are substantially co-planar and rest in their position of use against (or at least closely proximate) the surface of the glass pane 20a. The finger or fingers of the mounting bracket is/are arranged to slide between the glass pane 20a and the bead 22, to retain the bracket in position.
In the illustrated example, the fingers 36 of bracket 28 are directed at right angles (i.e. perpendicularly or orthogonally) so that when the bracket 28 is arranged in its corner 42 one of the fingers slides between the bead 22 and glass pane 20a into the upper frame member 12 and the other of the fingers 36 slides between the bead 22 and the glass pane 20a into side member 16. Similarly, the fingers of bracket 30 are directed at right angles so that when the bracket 30 is arranged in its corner 44 one of the fingers slides between the bead 22 and the glass pane 20a into the upper frame member 12 and the other of the fingers slides between the bead 22 and the glass pane 20a into the side member 18. The brackets 28, 30 are mirror images of one another.
The arrangement of WO2008/015440 further includes first and second mounting formations 38, 40 which are arranged at respective corners 42, 44 of the frame 10 and which co-operate with respective mounting brackets 28, 30 for supporting the blind in use. Each mounting formation 38, 40 comprises a base portion 46 and a post portion 48. The base portion 46 has a substantially flat rear surface (or coplanar surface portions) 46a which rest in use in contact with the surface of the glass pane 20a. The post portion 48 depends from the first portion and extends approximately orthogonally (i.e. perpendicularly) with respect to the plane of the glass pane 20a.
As noted above, the mounting brackets 28, 30 each have a first portion 32 defining attachment means. The attachment means co-operate with the respective mounting formation so that the mounting formation 38, 40 is constrained from movement with respect to the mounting bracket 28, 30 in directions substantially parallel to the plane of the glass pane 20a and also in directions substantially perpendicular to the plane of the glass pane 20a. Preferably, the mounting bracket 28, 30 and the mounting formation 38, 40 are attached to or retained on one another. In the preferred embodiment as illustrated, the first portion 32 of the mounting bracket 28, 30 comprises a web 32a defining an aperture 50. The web 32a is preferably substantially planar, the plane of web 32a, when the bracket 28, 30 is in its position of use, being approximately parallel to that of finger(s) 36. The post portion 48 is, in use, seated in the aperture 50 so that the base portion 46 lies between the web 32a and the glass pane 20a. Each mounting bracket 28, 30 has depending walls 52 by which the first portion 32 is connected to the second portion 34. Preferably the material from which the bracket 28, 30 is constructed can accommodate a small degree of deformation between the fingers 36 and the web 32a. Thus the web 32a is spaced apart from the fingers 36 by a distance nominally equal to, and preferably slightly less than, the depth "d" of the base portion 46 of the mounting formation 38, 40 (see Fig 3). In other words, the web 32a and the walls 52 are sized to accommodate the base portion 46 so that, when the post portion 48 is arranged in the aperture 50, the base portion 46 lies flat against the glass pane 20a. In the preferred construction the surface 46a of the base portion 46 is proud of the under-surface 36' of the fingers 36 (that is, depth "d" is greater than the depth of walls 52) which ensures that the glass pane 20a is contacted by the base portion 46 (which is preferably made of a plastics or other polymeric material) in preference to the (metal) bracket 28, 30. This construction is advantageous in that forces due to the inherent weight of the blind and also operation forces of the blind (which principally occur when raising or lowering the blind) are not primarily transferred via to the metal brackets and thence to the glass. Rather, such forces are transferred through the base portion 46. As noted above, in the prior art transfer of such forces through metal brackets potentially transfers stresses to the glass very locally through the edges of the metal brackets.
In an alternative configuration according to WO2008/015440 , the mounting bracket 28, 30 and the mounting formation 38, 40 may be formed as a unitary component. In this case, the unitary mounting component includes a base portion having a base surface which contacts the glass pane 20a in use, a mounting bracket portion including at least one laterally projecting finger (similar to fingers 36) and a post portion similar to post potion 48.
The post portion 48 may advantageously include one or more outwardly projecting latching formations 54 which act to engage edge parts of the web 32a which define the aperture 50, thereby to retain the mounting bracket 30, 32 on the post portion 48. In some preferred forms, the post portion 48 comprises first and second parallel arms 56, 58 separated by a narrow channel 60. In alternative arrangements, the post portion 48 is unitary and may include a groove extending along the length of the post portion 48.
The apparatus or system according to WO2008/015440 further comprises first and second connecting components 62, 64 which serve to attach the head assembly (head rail 24 in the illustrated embodiments) to the post portions 48 and thus to the frame 10 via the mounting brackets 28, 30. The connecting components 62, 64 are located at or near the left and right end portions of the head rail 24, on the rear side of the head rail 24 where they are not normally visible to a user. The connecting components 62, 64 may be formed integrally with the head rail 24, or, more preferably, are separate components which are securable to the head rail 24. For example, the head rail 24 and the connecting components 62, 64 may have co-operating engagement formations which allow the connecting components 62, 64 to "snap-fit" to the head rail 24, or such formations may allow the connecting components to slide into engagement with the head rail 24 from the side edges thereof.
Each connecting component 62, 64 includes means for attaching the connecting component 62, 64 to a respective post formation 48. In one example as illustrated, such means comprise a socket 66, the internal shape and dimensions of which are sized to conform with the external shape and dimensions of the post portion 48. Thus the socket 66 operatively slides into engagement with the post portion 48. The socket may include a slot or a channel which, when the connecting component 62, 64 is in its position of use, aligns with the channel 60 of the post portion 48. The channel of the connecting component 62, 64 and the channel 60 of the post portion 48 are used for securing the connecting component 62, 64 on the respective post portion 48 in its position of use. Thus, when the post portion 48 is received in the socket 66, the two may be secured together by inserting a screw or like fixing means into the respective channels. In this respect the channels and screw are sized so that the width of the channels is somewhat less than the width of the thread of the screw, so that the thread engages the sides of the channels and thereby secures the post portion 48 and the socket 66 together. Preferably in this variation the channel of the socket 66 includes an outer wider portion sized to accommodate the head of the screw and an inner, narrower, portion sized to conform with the thread portion of the screw. It will be understood that other fastening means may be employed to secure the post portion 48 and the socket 66 together. For example, the post portion may include a captive nut which is free to slide along the length of at least part of the post portion 48 and which receives a corresponding bolt via a channel in the socket 66.
It can also be readily appreciated that the arrangement described in WO2008/015440 is not confined to a post and socket arrangement where a post portion 48 of a mounting formation 38, 40 is inserted into a socket 66 of a connecting component 62, 64. Thus, for example, the post portion 48 may be formed with one or more walls which define an internal hollow void which acts as a socket, the internal shape and dimensions of which are sized to conform with the external shape and dimensions of a projecting member (plug) formed on the connecting component 62, 64, so that the plug is slidably received in the socket.
A significant advantage of the post portion 48 and socket 66 arrangement is that the connecting components 62, 64, and hence the head rail 24 are almost infinitely adjustable with respect to the length of the post. Thus, the head rail 24 can be set at any required depth on the post portions 48 to accommodate different depths of the window frame 10, that is, the distance from the front face 12a, 14a, 16a, 18a to the surface of the glass pane 20a. This ensures that no unintended gap is left between the head rail 24 and the frame 10.
In a preferred arrangement of WO2D08/015440 , as shown in particular in Figure 4, the mounting formations 38, 40 are configured so that the post portion 48 is inclined slightly upwardly, typically by not more than about 10°, preferably not more than about 5° and more preferably not more than about 2° to 3° (with respect to a line perpendicular to the plane of the glass pane 20a). This feature is advantageous in preventing the blind, when mounted, from tilting forwards away from the window. In the embodiment of Figure 4, the base portion is provided with a formation or lip 46b which bears against the web 32 and ensures that the base portion 46 and the web 32 are not in exactly parallel alignment.
The embodiment of WO2008/015440 illustrated in Figures 4, 5 and 6 further shows a safety latching arrangement which acts to prevent unintended separation of the connecting component 62, 64 from the mounting formation 38, 40. Post portion 48 comprises an arm 94 which is preferably resiliently deformable and which terminates in a raised formation 96 with inclined surfaces 96a, 96b. Socket 66 includes a lip 98 which is conveniently provided near the mouth 100 of the socket 66. The arm 94, formation 96 and lip 98 are so configured that on insertion of the post portion 48 into socket 66, or removal of the post portion 48 from the socket 66, lip 98 interferes with the passage of arm 94. Thus the arm 94 may be deflected by the lip 98. Alternatively, or additionally, the arm 94, the lip 98, and the internal dimensions of the socket may be so configured that it is necessary for removal of the connecting component 62, 64 to rotate the connecting component relative to the post portion 48 as suggested by arrow R such that the inclined surfaces 96a, 96b and the lip 98 do not interfere with one another. It follows that socket 66 cannot inadvertently be removed from post portion 48 without overcoming the resistance to deflection of arm 94.
In order, inter alia, to provide additional security to the attachment of the blind head rail 24 to the window frame 10, the system disclosed in WO2008/015440 is desirably further provided with side members 68 which are arranged in use to lie in confronting relation with frame side members 16, 18. The side members 68 extend from an upper part of the aperture 20 close to the respective upper corners 42, 44 to a lower part of the aperture close to respective lower corners 43, 45. Preferably upper parts 68a of the side members 68 are in contact with a respective mounting bracket 28, 30 or mounting formation 38, 40. Most preferably, the side members 68 and respective mounting brackets 28, 30 include co-operating formations by which the side members 68 and mounting bracket 28, 30 are joined, attached or engaged. For example, the mounting bracket 28, 30 may conveniently include a slot 70 which receives an upper end portion of face 68b of the side member 68. The side member 68 may be selected from a number of different shapes and configurations which are adapted for different sizes and profiles (e.g. depths) of the frame 10. Three different side members 68 are shown in Figures 1 and 2 by way illustration of different possible shapes and configurations.
Means are also provided for attaching the side members to the frame 10. In the preferred embodiment of WO2008/015440 as illustrated, attachment clips 72 are provided which include a head portion 74 configured to engage the side member 68 and a flat finger portion 76 configured to slide between the glass pane 20a and the bead 22, thereby to retain the side member in its position of use.
Third and fourth mounting brackets 78, 80 are also disclosed in WO2008/015440 and are configured to sit in respective lower corners 43, 45 of the frame 10. In a similar manner to the first and second mounting brackets 28, 30, each of the further (third and fourth) brackets 78, 80 includes a planar finger portion 82 which is arranged to slide in use between the glass 20a and the bead 22 in the region of the corners 43, 45. The mounting brackets 78, 80 also include an upstanding attachment or mounting formation 84 which extends away from the plane of the glass 20a. In the illustrated embodiment, the attachment formation 84 comprises a web or finger extending orthogonally with respect to the glass 20a. In use, each attachment formation 84 carries a cap or spacer 86 which is typically formed from a plastics material. In some arrangements, the distance between the two spacing formations 86 substantially corresponds to the length of the foot rail 26. Thus, where the foot rail 26 is moveable, the spacing formations 86 assist in retaining the foot rail 26 in position when it is in its lowermost position. In alternative arrangements, one or both attachment formations 84 may be employed to secure operating cords or the like of a blind operating mechanism. Side members 68 may include at their lower ends a slot or cut-out in which the attachment formation 84 is accommodated. Alternatively, the further (third and fourth) mounting brackets 78, 80 may each include a slot or cut out in which a lower part of a side member 68 is accommodated.
As noted above, an important advantage of the arrangement of WO2008/015440 is the facility to adjust the mounting of the head rail by longitudinal movement of the socket 66 on the post portion 48, thereby to accommodate different constructions of the frame 10. In order to facilitate the secure and accurate positioning of the head rail 24, one or more spacing elements 88 may be provided which are configured to sit between the head rail 24 (more specifically, the respective connecting component 62, 64) and the frame 10. This allows for the case where the combined length λ of the socket 66 and the depth d of the base portion 46 is greater than the depth of the frame 10 (that is, the distance from the front face 12a, 14a, 16a, 18a to the surface of the glass), or, for the case where the length of the post portion 48 is greater than the depth of the frame 10. To accommodate different depths of frame, a selection of spacing elements 88 can be provided each having a different depth W. By choosing a spacing element of appropriate depth wit is thus possible to ensure that no gap, or substantially no gap, is present between the internal or rear face of the head rail 24 (or, more specifically, the rear face of the connecting component 62, 64) and the front face of the frame 10. Likewise, the head rail 24 may be constructed to have a lower face which, by use of spacing elements 88 of appropriate depth, extends to meet the glass pane 20a without any significant gap. Each spacing element 88 includes edge wall portions 88a, 88b which define a recess or cut-out which is sized and shaped to conform to the external shape of the socket 66.
A further significant advantage of the arrangement of WO2008/015440 lies in the provision of the base portion 46 which acts as a pad or foot which takes the load of the blind against the glass, the load comprising the natural weight of the blind and operational load, in particular should excessive force be used. This can be contrasted with the prior art described above, in which there is 'metal to glass' contact which means a metal edge must ultimately pass the load to the glass and therefore risks damage to the glass.
Where, in particular in the case of Venetian blinds, the head rail 24 accommodates a lift and/or tilt mechanism for the blind which employs operating cords, WO2008/015440 discloses that the connecting components 62, 64 may desirably include cord guiding formations 90 to direct the cords along a desired and predetermined path into the head rail. End caps 92 may be provided to close the ends of the head rail 24 and provide a more aesthetically pleasing finish.
In a preferred method of mounting a blind in a glazed aperture such as a window according to the disclosure of WO2008/015440 , initially the post portions 48 of the first and second mounting formations 38, 40 are inserted into the respective apertures 50 of the mounting brackets 28, 30. Where latching formations 54 are present (as is preferred), the post portions 48 are inserted to an extent sufficient to cause the latching formations 54 to engage the edges of the web 32a which define aperture 50. The first and second mounting brackets are located at the respective upper corners 42, 44 of the frame 10, so that fingers 36 extend between the bead 22 and the glass 20a into the respective frame members 12, 16 and 12, 18. Side members 68 are then fixed in place using clips 72 and with upper portions thereof engaged in slot 70 of respective mounting brackets 28, 30. At the same time, further (third and fourth) mounting brackets 78, 80 are engaged with the side members (via, for example, the slot or cut-outs provided) and the finger portions thereof are inserted into the respective corners 43, 45 of the frame between the glass pane 20a and the bead 22. Where appropriate, spacers 86 are mounted on the mounting formations 84 of the further (third and fourth) mounting brackets 78, 80. If required, suitably sized spacing elements 88 are mounted around the post portions 48 of the mounting formations 38, 40. Connecting components 62, 64 are mounted to head rail 24 and sockets 66 are mounted on post portions 48 and if necessary secured in place with fixing means provided. The head rail 24 carries all the components of the blind, including the shade portion, tilt mechanism and so on. Thus, mounting of the head rail on the post portions 48 (via the connecting components 62, 62) completes the installation of the blind. The head assembly (head rail 24 in the illustrated embodiments), being substantially rigid, serves to ensure that the mounting brackets 28, 30 cannot move laterally (parallel to upper frame member 12). Side members 68 prevent movement of the mounting brackets 28, 30 parallel to frame side members 16, 18. Thus, the combination of these integers in effect provides a framework which retains the mounting brackets 28, 30 in their intended position and assists in the transfer of operating forces from the head rail, without allowing such forces to be transferred to the glass pane 20a through potentially relatively sharp edges of the mounting brackets 28, 30. Instead, forces are transferred primarily through the base portions 46 of the mounting formations 38, 40.
Referring now in particular to Figures 7 to 10, the tool 100 according to the invention comprises a body portion 102 having an upper face 104, a lower face 106 and side walls 108A-D. Walls 108A-D define concave or indented finger-grip portions 110A-D which facilitate holding of the tool in a users hand.
The tool 100 includes a void 114. This void 114 is not provided for functional reasons associated with the use of the tool but for manufacturing reasons such as weight and material saving or moulding considerations. Therefore the shape of void 114 is not relevant to the present invention. However, it is noted that the presence of the void 114 illustrates that it is not necessary for the lower face 106, which rests in use against the window pane, to be continuous across the full extent of the body portion 102 or the tool 100.
In preferred embodiments of the tool 100 the body portion 102 further includes surfaces, lands or web portions 116 which are spaced from and approximately parallel to lower face 106. In preferred arrangements, the spacing of the lands 116 from the lower face 106 is chosen to be not less than the depth "d" of the base portion 46 of the mounting formations 38, 40 (Figs 3 and 5). Lands 116 define at least one (and preferably two) cavities, recesses or voids 118A, 118B. In the example illustrated, the cavities 118A, 118B are respectively defined by internal walls 118A1, 118A2, 118A3, 118A4 and 118B1, 118B2, 118B3, 118B4. The internal shape of the cavities 118A, 118B is determined by the shape of the upstands or post portions 48 of the mounting components 38, 40. Generally, the shape of the post portions 48 for mounting at respective sides of a window will be the same, and it follows that the internal shape of the cavities 118A, 118B will be the same. However, this is not necessarily so and if the shapes of the post portions differ, the internal shapes of the cavities 188A, 188B may also to differ if necessary to accommodate the differences in shape of the post portions 48. These post portions 48 as illustrated are approximately square in cross-section and consequently the cavities 118A, 118B are similarly square. Of course, if the cross-sectional shape of the post portions 48 is selected to be other than square, for example triangular or polygonal, then the cavities 118A, 118B will also be constructed to be rectangular or polygonal in shape. The internal size and shape of the cavities 118A and 118B is selected to be a close fit with the external shape of the post portions 48 without, preferably, being a close friction fit or interference fit. Thus, although the shape of the cavities 118A, 118B should closely follow that of the post portions 48, the post portions 48 should be able to move sufficiently freely in the longitudinal direction so that the post portions 48 can easily be inserted into, and removed from the respective cavities 118A, 118B when desired by a user. Some degree of frictional engagement between the walls of the cavities 118A, 118B and the post portion 48 may be desirable so that the post portion 48 does not fall out of the cavity 118A, 118B unless the installer so intends. It will be appreciated that, although desirable, it is not essential for all of the cavity walls 118A1-4, 118B1-4 to provide a close fit with the post portion 48, provided only that during use movement of the post portion 48 with respect to the cavity 118A, 188B is maintained at a minimum and that accurate positioning of the mounting formation 38, 40 is not prejudiced.
Thus, in use of the tool 100, firstly a bracket 28, 30 is mounted on a post portion 48 of a mounting formation (38, 40) (if not already so mounted) and the post portion 48 is inserted into an appropriate cavity 118A, 118B. The orientation of the post portion 48 in the cavity 118A, 118B is arranged so that the bracket 28, 30 adopts its orientation of use, that is, so that the (or each) finger 34, 36 is directed towards the bead beneath which it sits in use. For mounting the mounting formation (supporting component) (38, 40) in the top left hand side of a window (as viewed by an installer) the respective post portion 48 is received into cavity 118A of tool 100 so that bracket 28, 30 and lands 116 are opposed. Thus, surface 46a remains exposed. The tool 100 is then used to offer the mounting component 38, 40 up to the glass pane 20a in the vicinity of the upper left corner so that the surface 46a closely approaches, or contacts, the glass pane 20a. The tool 100 is then urged by the user to move laterally so that the finger portion(s) 34, 36 of the bracket 28, 30 slide between the bead(s) 22 and the glass pane 20a. In preferred embodiments, the tool is urged to move laterally until walls 108A, 108C come into contact with frame members 12, 16. It is especially desirable that the location of the cavity 118A, 118B within the tool is arranged such that, when the walls 108A, 108C are in contact with frame members 12, 16, the mounting formation (38, 40) is in its desired final location, in particular with a view to ensuring that connecting component 62, 64 is properly located in its final position when the socket 66 of the connecting component 66 is mounted on post portion 48.
Mounting of the mounting formation (supporting component) (38, 40) at the top right hand side of the window follows the same procedure, except that the post portion 48 of the mounting component 38, 40 is received in cavity 118B and the tool 100 is urged to move laterally until walls 108B, 108D are in contact with frame members 12, 18.
By use of the tool of the present invention, positioning of the mounting components 38, 40 is automatic in the sense that the installer is not required to make any measurements as to the required position of the mounting components either before or after installation thereof. This makes installation exceedingly quick, which is commercially very advantageous. Furthermore, only a minimum of force is required by a user to urge the mounting components into their position of use.
In preferred embodiments the tool 100 further comprises third and fourth cavities 120A, 120B which in use accommodate third an fourth mounting brackets (further (third and fourth) mounting components) 78, 80. Each of the further (third and fourth) mounting components 78, 80 includes a finger 82 and a return or upstand portion 84. The return portion 84 may be essentially planar but not necessarily entirely planar. For example, the return portion may include features for securely retaining an additional component such as cap or spacer 86. The internal profile of the third and fourth cavities is shaped accordingly. Figure 9 illustrates that the third and fourth cavities 120A, 120B primarily take the form of slits or slots, but include, for example, protruding formations 122 which may, in use, contact the return portion 84 of the mounting component 78, 80
The mode of use of the tool 100 with the third and fourth mounting components is similar to that with the first and second mounting components: the return portion 84 is received in the respective cavity 120A, 120B and the tool 100 is used to offer the third or fourth component 78, 80 up to the glass pane 20a and to slide the relevant finger 82 between the glass pane 20a and the bead 22 at the lower corners of the window. As noted above, the third and/or fourth mounting components 78, 80 are usefully used for securing operating cords of a blind. This has the advantage, for example in the case of Venetian or pleated blinds that the operating cords can be pre-tensioned in the factory prior to installation. Tensioning of the cords by an installer is thus not required, thereby improving the speed, efficiency and accuracy of the blind installation.
In further preferred embodiments, the tool 100 comprises at least one formation 124 (and preferably two formations 124A, 124B) which are configured to co-operate in use with the side member retaining means (clips) 72 for securing the respective side members 68 in their position of use. The formations 124A, 124B are preferably provided at opposed sides of the tool 100 at a junction between lower face 106 and a side wall 108. The formations 124A, 124B take the form of depressions or cut-outs sized to accommodate head portion 74 of clip 72. In use, clip 72 is held so that finger portion 76 thereof rests against the glass pane 20a. Head portion 74 of the clip 72 is received into formation 124A, 124B with the lower surface 106 of tool 100 also resting against the glass pane 20a. Wall portion 124A1, 124B1 of the tool 100 is then used to urge the clip 72 laterally so that finger portion 76 slides between the bead 22 and the glass pane 20a and the head portion 74 engages the side member 68.
The installation of a blind using the tool according to the invention can be completed very quickly. Initially the first and second supporting devices 38, 40 are mounted in the upper corners 42, 44 (Fig 2) of the window as described.
The further (third and fourth) supporting devices (mounting components) 78, 80 are mounted in the lower corners 43, 45 of the window as described. It is then possible to fit the side members 68 and tool 100 is used to mount the clips 72 in their position. The arrangement is then ready to receive the blind. It will be recalled that the blind head rail 24 includes, or has connected thereto, connecting components 62, 64 each including a socket 66 which receives post portion 48, The head rail 24 carries the blind (typically a Venetian or pleated blind). Preferably the shade portion of the blind is secured in its "raised" (i.e. most compact) configuration. Simple securing means such as elastic bands may be used for this purpose. The head rail 24 is mounted in position by offering sockets 66 of the connecting components 62, 64 up to the respective post portions 48 so that the post portions are received into the sockets. At this stage the securing means are removed (such as by simply cutting them) and the blind shade portion can be lowered. If means are required for fixedly attaching the sockets 66 to the post portions 48, these are put in place at this time, if necessary while deflecting the blind shade portion to a position in which it does not obstruct this step (such as by tilting the laths of a Venetian blind into their generally vertical, shading, position). For example, the sockets 66 may be secured to the post portions by simple screw fixings. If required, operating cords can then be secured in their operating position, in particular by affixing or attaching to the third or fourth supporting member. The bottom rail of the blind is adjusted to a horizontal position (if necessary) and the installation of the blind is complete.
Throughout the description and claims of this specification, the words "comprise" and "contain" and variations of the words, for example "comprising" and "comprises", means "including but not limited to", and is not intended to (and does not) exclude other moieties, additives, components, integers or steps.
Throughout the description and claims of this specification, the singular encompasses the plural unless the context otherwise requires. In particular, where the indefinite article is used, the specification is to be understood as contemplating plurality as well as singularity, unless the context requires otherwise.
Features, integers, characteristics, compounds, chemical moieties or groups described in conjunction with a particular aspect, embodiment or example of the invention are to be understood to be applicable to any other aspect, embodiment or example described herein unless incompatible therewith.

Claims

A tool (100) for use in locating in its position of use at least one supporting device (28, 38), (30, 40) for mounting a window blind apparatus (24) at a window frame (10), the, or each, supporting device comprising at least one laterally projecting portion (34, 36) adapted to slide in use between a glass pane (20a) and a resilient retaining bead (22) which bears against the glass pane (20a), the tool (100) comprising a body portion (102) having at least one cavity (118A, 118B) configured to receive therein a first portion (48) of a said supporting device (38, 40) such that the laterally projecting portion (34, 36) of the supporting device projects from the body portion (102) of the tool (100), whereby the supporting device (28, 38) (30, 40) can be urged by use of the tool (100) to move in a direction effective to insert said laterally projecting portion (34, 36) between the glass pane (20a) and the bead (22) until the supporting device (28, 38), (30, 40) attains its use position.
A tool (100) as claimed in claim 1 comprising a top wall (104), a base wall (106) and at least one side wall (108A-D) extending between the top wall (104) and the base wall (106), said at least one cavity (118A, 118B) opening at or proximate the base wall (106) and extending towards the top wall (104).
A tool (100) as claimed in claim 2 wherein the, or each, cavity (118A, 118B) is so disposed in the tool (100) with respect to one or more side walls (108A-D) that when, in use, a predetermined side wall or walls (108A-D), or portion thereof, abuts a complementary portion of the window frame (10), the supporting device (28, 38) (30, 40) is in its position of use.
A tool (100) as claimed in any of claims 1 to 3 wherein the cavity (118A, 118B) is configured such that, when the supporting device (28, 38) (30, 40) attains its use position, the tool (100) is separable from the supporting device (28, 38) (30, 40) without displacing the supporting device (28, 38) (30, 40) from said use position.
A tool (100) as claimed in any of claims 1 or 4 wherein said at least one cavity (118A, 118B) is configured to receive respective first portions (48) of first and second supporting devices (28, 38) (30, 40).
A tool (100) as claimed in any of claims 1 to 5 comprising first and second cavities (118A, 118B) configured to receive respective first portions (48) of first and second supporting devices (28, 38) (30, 40).
A tool (100) as claimed in any preceding claim wherein said laterally projecting portion (34, 36) of the supporting device (28, 38) (30, 40) is a substantially planar finger.
A tool (100) as claimed in any preceding claim wherein the first portion (48) of the supporting device comprises an upstand portion, preferably a post portion, attached, directly or indirectly, to the laterally projecting portion (34, 36) and preferably configured to extend in use approximately orthogonally with respect to the glass pane (20a).
A tool (100) as claimed in any of claims 1 to 8 wherein the body portion (102) is configured to be gripped by a user's hand.
A tool (100) as claimed in any preceding claim wherein said cavity (118A, 118B) has one or more internal wall surfaces (118A1-4, 118B1-4) configured substantially to conform to at least a portion of the first portion (48) of a said supporting device (28, 38) (30, 40).
A tool (100) as claimed in claim 3 or any of claims 4 to 6 when dependent on claim 3 wherein each respective cavity (118A, 118B) has one or more internal wall surfaces (118A1-4, 118B1-4) configured substantially to conform to at least a portion of the first portion (48) of the a respective first or second supporting device (28, 38) (30, 40).
A tool (100) as claimed in any of claims 1 to 9 configured for use with a supporting device (28, 38) (30, 40) further comprising a base portion (46) having a base surface (46a) configured to rest in use against the glass pane (20a)and from which base portion (46) the first portion (48) extends.
A tool (100) as claimed in claim 6 or any of claims 7 to 12 when ultimately dependent on claim 6 wherein the first and second cavities (118A, 118B) are located proximate opposed sides of the tool (100).
A tool (100) as claimed in claim 2 or 3 or in any of claims 4 to 13 when dependent on claim 2 wherein the base wall (106) comprises a glass pane (20a) contacting surface which is substantially planar, the, or each, cavity (118A, 118B) having a mouth opening at said glass pane contacting surface (106).
A tool (100) as claimed in claim 12 wherein the tool (100) comprises a glass pane (20a) contacting surface which (106) is substantially planar and at least one recess (117), the or each recess (117) being associated with a cavity (118A, 118B), the recess (117) having a top wall or land or web portion (116), marginal edges of which delimit a mouth of a cavity (118A, 118B), and wherein the web portion (116) is spaced apart from the glass pane contacting surface (106) by an amount sufficient to accommodate the base portion (46) of the supporting device (28, 38) (30, 40) so that the base surface (46a) thereof does not extend beyond the glass contacting surface (106).
A tool (100) as claimed in claim 15 when ultimately dependent on claim 2 wherein the glass pane contacting surface is at least a portion of the base surface (106).
A tool (100) as claimed in claim any preceding claim wherein the window blind apparatus (24) further comprises:
at least a first (and preferably a second) longitudinally extensive side member (68) configured to be mounted at the sides of the glass pane (20a) thereby to cover the bead (22) and to extend from proximate the use position of the supporting device (28, 38) (30, 40) to proximate the lowermost part of the glass pane (20a); and

first (and preferably second) retaining means (72) adapted to retain

the (or each) side member (68) in position.
and wherein the tool (100) further comprises at least one formation (124A, 124B) operable to co-operate with the (or each) side retaining means (72) to urge the retaining means (72) into its position of use.
A tool (100) as claimed in any preceding claim wherein the tool (100) is configured for use with first and second supporting devices (28, 38) (30, 40) of the same type.
A tool (100) as claimed in claim 18 wherein the first and second supporting devices (28, 38) (30, 40) are not identical and respective first and second cavities (118A, 118B) of the tool (100) are differently configured for each respective first portion (48) of the supporting devices (28, 38) (30, 40).
A tool (100) as claimed in any preceding claim further configured for use with at least one further supporting device (78, 80), the or each said further supporting device (78, 80) comprising a first portion having at least one laterally extending projecting portion (82) configured to slide in use between the bead (22) and the glass pane (20a), and a return portion (84) configured for mounting an additional component (86), the tool (100) further comprising at least a further cavity (120A, 120B) having one or more internal wall surfaces configured substantially to conform to at least a portion of the external profile of a said return portion (84) such that the said return portion (84) is receivable into said further cavity (120A, 120B).
A tool (100) as claimed in claim 20 wherein the first and second supporting devices (28, 38) (30, 40) are of a first type and the or each further supporting device (78, 80) is of a second type and wherein respective first and second (118A, 118B) and further (120A, 120B) cavities are differently configured for conforming with a respective first or second (28, 38) (30, 40), or further (78, 80), supporting device.
A tool (100) as claimed in claim 20 or 21 wherein the return portion (84) of the, or each, further supporting component (78, 80) is substantially planar and the, or each, further cavity (120A, 120B) of the tool comprises a slot sized substantially to conform with said, or a respective said, return portion (84).
A kit of parts for use in locating a window blind apparatus (24), the kit comprising:
a tool (100) as claimed in any preceding claim, and

at least first and second supporting devices (28, 38) (30, 40) each comprising at least one laterally projecting portion (34, 26) adapted to slide between a glass pane (20a) and a resilient retaining bead (22) which bears against the glass pane (20a) and a first portion (48) configured to be received in a cavity (118A, 118B) of the tool (100).
A kit of parts as claimed in claim 23 wherein said laterally projecting portion (34, 36) of the supporting device (28, 38) (30, 40) is a substantially planar finger.
A kit of parts as claimed in claim 23 or 24 wherein the first portion (48) of the supporting device (28, 38) (30, 40) comprises an upstand portion, preferably a post portion (48), attached, directly or indirectly, to the laterally projecting portion (34, 36) and preferably configured to extend in use approximately orthogonally with respect to the glass pane (20a).
A kit of parts as claimed in any of claims 23 to 25 wherein the supporting devices (28, 38) (30, 40) comprise respective first and second mounting components each including
a base portion (46) having a base surface (46a) configured to rest in use against the glass pane (20a),
a post portion (48) configured to extend in use approximately orthogonally with respect to the plane of the glass pane (20a); and
a mounting bracket (28, 30) portion including at least one finger (34, 36) configured to slide in use between the bead (22) and the glass pane (20a).
A kit of parts as claimed in claim 26 further comprising any one or combination of the following features:
(i) first and second connecting components (62, 64) configured operatively to attach a blind head assembly (24) to the respective post formations (48);

(ii) the mounting components (62, 64) include any one or combination of features of the mounting components as defined in WO2008/015440 and as hereinabove described;

(iii) further supporting devices (78, 80) which further supporting devices (78, 80) are of a different type to the first and second supporting devices (28, 38) (30, 40) said further supporting devices (78, 80) preferably including any one or combination of features of the mounting brackets as defined in WO2008/015440,8 and as hereinabove described;

(iv) at least a first (and preferably a second) longitudinally extensive side member (68) configured to be mounted at the sides of the glass pane (20a) thereby to cover the bead (22) and to extend from proximate the use position of the supporting device (28, 38) (30, 40) to proximate the lowermost part of the glass pane (20a) and first (and preferably second) retaining means (72, 74) adapted to retain the (or each) side member (68) in position, the or each side member (68) preferably including any one or combination of the features of the side members as defined in WO2008/015440.8 and as hereinabove described and the or each retaining means (72, 74) preferably including any one or combination of the features of the retaining means as defined in WO 2008/015440 and as hereinabove described.
A method for use in locating in its position of use a supporting device (28, 38) (30, 40) for a window blind apparatus (24), the supporting device comprising at least one laterally projecting portion (34, 36) adapted to slide between a glass pane (20a) and a resilient retaining bead (22) which bears against the glass pane (20a) and a first portion (48) configured for mounting, directly or indirectly, the blind apparatus (24), the method comprising providing a tool (100) as claimed in any of claims 1 to 22, inserting into a suitably configured cavity (118A, 118B) of the tool (100) said first portion (48) and moving the tool (100) thereby to urge the supporting device (28, 38) (30, 40) in a direction effective to insert said at least one laterally projecting portion (34, 36) between the glass pane (20a) and the bead (22).