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WO2002002881A1 - Dispositif anti-debordement - Google Patents

Dispositif anti-debordement Download PDF

Info

Publication number
WO2002002881A1
WO2002002881A1 PCT/GB2001/002590 GB0102590W WO0202881A1 WO 2002002881 A1 WO2002002881 A1 WO 2002002881A1 GB 0102590 W GB0102590 W GB 0102590W WO 0202881 A1 WO0202881 A1 WO 0202881A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
plug body
aperture
overflow preventer
spring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/GB2001/002590
Other languages
English (en)
Inventor
Robert Malcolm Stewart
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bulk Hardware Ltd
Original Assignee
Bulk Hardware Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB0015833A external-priority patent/GB0015833D0/en
Priority claimed from GB0112933A external-priority patent/GB0112933D0/en
Application filed by Bulk Hardware Ltd filed Critical Bulk Hardware Ltd
Priority to AU2001264093A priority Critical patent/AU2001264093A1/en
Publication of WO2002002881A1 publication Critical patent/WO2002002881A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
    • E03C1/22—Outlet devices mounted in basins, baths, or sinks
    • E03C1/23—Outlet devices mounted in basins, baths, or sinks with mechanical closure mechanisms
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
    • E03C1/24—Overflow devices for basins or baths
    • E03C1/242—Overflow devices for basins or baths automatically actuating supply or draining valves
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
    • E03C1/22—Outlet devices mounted in basins, baths, or sinks
    • E03C1/23—Outlet devices mounted in basins, baths, or sinks with mechanical closure mechanisms
    • E03C2001/2317—Outlet devices mounted in basins, baths, or sinks with mechanical closure mechanisms transmission of actuation force involves a spring

Definitions

  • the present invention relates to an overflow preventer, and more particularly to an overflow preventer for baths, sinks and the like, which comprises a plug body receivable into, and fully removable from, a drain hole of the bath, sink or the like.
  • bath, sink or the like used herein includes all installations in which water or other liquids are collected and which include a drain hole.
  • basins and cisterns may also be mentioned without limitation.
  • Overflow preventers comprise a plug body receivable into, and fully removable from, a drain hole of a bath, sink or the like.
  • these devices include a valve which is normally closed, but which can open when a certain pre-determined depth of water is exceeded in the bath, sink or the like. The device can therefore function as a plug under normal circumstances, and as a water outlet when the water level in the bath, sink or the like approaches the overflow condition.
  • a user may start to fill a bath, sink or the like from a tap (faucet), and may then be distracted or called away while the filling continues.
  • a tap tap
  • the valve In the initial rest position of the overflow preventer, the valve is biassed closed to form a seal.
  • the hydrostatic pressure on the valve increases. If filling is continued, the pressure on the valve will overcome the bias and urge the valve to open. A flow passage will then be opened and water will drain away.
  • the prior art overflow preventers generally suffer from the disadvantages of a relatively restricted water outlet area, as well as no, or only an inconvenient, manually actuable override mechanism. Such an override mechanism could be very useful, to enable a user to drain the bath, sink or the like quickly and conveniently and without having to extract the device from the drain hole.
  • the construction of the prior art devices is generally somewhat elaborate, involving a large number of cooperating parts, leading to increased manufacturing costs, to undesirable bulk and weight of the complete devices, and to a likelihood of internal fungal growth as a result of water being trapped in the mechanisms.
  • an overflow preventer comprising:
  • valve associated with the plug body and movable between a first position in which the valve closes the aperture and a second position in which the aperture is open to allow water to drain through the aperture, the valve being resiliently biased to the first position while the hydrostatic pressure acting on the valve in use is less than a predetermined value, the valve including an upwardly directed valve surface against which valve surface the hydrostatic pressure bears in use, the said surface being adapted for sealing abutment against cooperating portions of the plug body in the said closed position;
  • plug body and the valve are arranged such that the valve surface extends substantially unshielded across the entire aperture of the plug body.
  • the te ⁇ n “extends substantially unshielded” used herein refers to the requirement that the upwardly directed valve surface which occludes the aperture is presented to the entire water column above the entire aperture surrounded and defined by the annulus of the plug body with no, or negligible, shielding by overlying fixed parts of the overflow preventer (such as, for example, the "spider web" frame arrays which overlie the valve mechanisms in the prior art referred to above), whereby the valve can easily be opened by a user's finger or toe to override the biassing of the valve to the closed position.
  • the area of the valve surface which in use directly supports a full column of water is equal to at least about 90%, particularly 100%, of the area within the annulus of the plug body.
  • the term "receivable into, and fully removable from, a drain hole” used herein refers to the requirement that the overflow preventer can be easily inserted into, and removed from, a drain hole by hand, in the general manner of a conventional plug, without the need for adjustment or tampering with the drain hole and associated installations.
  • the plug body preferably has an external surface which is dimensioned and configured for fitting into the drain hole in the general manner of a conventional plug, and in particular has a tapering curved external surface.
  • the plug body has a single central aperture, which is preferably circular in shape.
  • the said predetermined value of the hydrostatic pressure, below which the valve is biased to the closed position can be selected during the manufacturing stage from within a range of values, by resiliently biassing the valve to the extent appropriate to the desired value of the hydrostatic pressure, below which the valve is biased to the closed position.
  • the valve is preferably disposed substantially below the aperture of the plug body.
  • the overflow preventer may be provided with means for locking the valve in the open or the closed position.
  • the locking means if present, may be of conventional construction, and in particular may be releasable.
  • the plug body and the valve are arranged such that the valve surface extends substantially unshielded across the entire aperture of the plug body. This surface is thereby accessible for the user to conveniently override the valve.
  • the valve surface may have any desired surface configuration. It is most preferred that the configuration of the upper surface is so shaped that, in use at a hydrostatic pressure lower than the predetermined automatic opening value, the valve can be conveniently opened by a depression action of the finger, heel or toe of a user of the bath, sink or the like, to override the resilient biassing of the valve to the closed position.
  • the configuration of the valve surface may conveniently be convex, particularly domed.
  • the valve surface is adapted for watertight sealing abutment against cooperating portions of the plug body in the closed position.
  • the inner periphery of the aperture of the plug body and the outer periphery of the valve surface are adapted so that the two meet in sealing abutment in the closed position of the valve.
  • a convex, e.g. domed, configuration of the valve surface, at least at the outer periphery thereof, provides a useful peripheral guide surface which can slide over the cooperating portion of the plug body and assists in bringing the two parts into the desired abutment on closure of the valve.
  • the plug body and the valve are each suitably formed of plastics material, which may be the same or different as between the two parts.
  • the valve may, for example, be of a harder material than the plug body.
  • the parts are preferably formed by moulding and are each preferably unitary.
  • the resilient biassmg of the valve is suitably accomplished by means of a spring arranged to bear against the valve, preferably from below.
  • the spring may conveniently be a helical spring (such as a compression spring or a tension spring) or a flat spring (such as a leaf spring or a hybrid spring such as a Belville spring).
  • a helical compression spring is preferred.
  • valve and associated spring may conveniently be held in place, generally within the annulus of the plug body, by means of a retainer part, which may engage the plug body in any suitable manner (e.g. by push or snap fitting) to retain the valve and the spring between the plug body and the retainer.
  • a retainer part which may engage the plug body in any suitable manner (e.g. by push or snap fitting) to retain the valve and the spring between the plug body and the retainer.
  • the spring is preferably disposed along a central longitudinal axis of the overflow preventer, between - at the lower end of the spring - a cross member of the retainer which traverses the aperture of the plug body below the valve and - at the upper end of the spring - the valve.
  • a guide member e.g. a guide rod, preferably proj ects from the underside of the valve and cooperates with the spring to maintain a longitudinal path of action on the valve.
  • the configuration of the valve surface may suitably be chosen to minimise the total top to bottom depth of the overflow preventer.
  • the overall depth of the overflow preventer can be less than would be necessary if the same spring length were to be used with a valve having a flat valve surface. This reduction in the dimension of the overall device has aesthetic advantages, and enables the overflow preventer to sit deeper in the drain hole, thereby improving its attractiveness to the user.
  • an overflow preventer consisting essentially of: (a) a plug body receivable into, and fully removable from, a drain hole of a bath, sink or the like, the plug body having a generally annular configuration surrounding an aperture;
  • valve associated with the plug body and movable between a first position in which the valve closes the aperture and a second position in which the aperture is open to allow water to drain through the aperture, the valve being preferably disposed below the aperture;
  • valve includes an upwardly directed valve surface against which valve surface the hydrostatic pressure bears in use, the said surface being adapted for sealing abutment against cooperating portions of the plug body in the said closed position, and the plug body and the valve are arranged such that the valve surface extends substantially unshielded across the entire aperture of the plug body.
  • the present invention therefore makes available a simple overflow preventer, which (a) does not require any adjustments to be made to existing installations, (b) is easy to use, even for those with impaired manual dexterity, (c) avoids or reduces the risk of fungal growth caused by water lying in enclosed mechanisms, (d) avoids or reduces the risk of fouling by hair or other debris, (e) includes a simple override mechanism easily actuable by a user's finger, heel or toe, or by a stick or similar implement, (f) creates a substantially improved outflow efficiency, in comparison with known devices of comparable size, (g) is easy to clean, and (h) fits into a drain hole in generally the same way, and with generally the same external appearance, as a conventional plug.
  • the device of the present invention with the valve in the open position, can provide an improved hydrodynamic performance in terms of outflow drainage efficiency, in comparison with an unmodified drain hole.
  • water drains from a bath, sinlc or the like it primarily runs down the interior wall of the waste pipe, as a result of surface tension and capillarity effects, and tends not to fall down the centre of the waste pipe under gravity alone.
  • a valve having an upper surface configuration - particularly a convex, e.g. domed, configuration - which directs the water outflow radially outwards and downwards in a smoother way than would be achieved by a flat valve surface the device of the present invention is found to assist the outflow performance through the drain hole.
  • Figure 1 shows an overflow preventer in exploded perspective view
  • Figure 2 shows a vertical cross sectional view of the overflow preventer of Figure 1, with the valve in the closed position;
  • Figure 3 shows a vertical cross sectional view of the overflow preventer of Figure 1 , with the valve in the open position for outflow of water.
  • an overflow preventer useful as a plug for a bath, sink or the like.
  • the general shape and dimensions of the overflow preventer correspond to the shape and dimensions of a conventional plug, and the illustrated device is intended to be interchangeable with such a plug.
  • the illustrated overflow preventer comprises a plug body 1 receivable into, and fully removable from, a drain hole 2 of a bath, sink or the like 3.
  • the plug body 1 has a generally annular configuration surrounding a circular central aperture 4, the exterior surface being tapered for fitting into the drain hole 2.
  • the overflow preventer further includes a valve 5 having a generally mushroom shape including a domed upper surface 6.
  • the valve 5 is resiliently biassed into watertight sealing abutment (see Figure 2, which illustrates this closed position) against the inner periphery 7 of the annulus of the plug body 1 from below, by means of a helical compression spring 8 arranged to bear against the underside of the valve 5 from below.
  • the resilience of the spring 8 is selected so that it will compress, to allow the valve 5 to open under the hydrostatic pressure (as shown in Figure 3 , which illustrates this open position), when the column of water above the valve exceeds a pre-determined depth.
  • the plug body 1 and the valve 5 are each formed of plastics material, which in the illustrated device are different materials as between the two parts.
  • the valve 5 is of a harder material than the plug body 1.
  • the parts are formed by moulding and are each unitary.
  • valve 5 and associated spring 8 are held in place, generally within the annulus of the plug body 1, by means of a ring-shaped retainer/locator 9, which is engaged with the plug body 1 by snap fitting, to retain the valve 5 and the spring 8 between the plug body 1 and the retainer/locator 9.
  • the spring 8 is disposed along the central longitudinal axis 10 of the overflow preventer, between - at the lower end of the spring - an upwardly directed end face of a cylindrical hub portion 11 of the retainer/locator 9, which is supported on a tripod-shaped cross- member 12 of the retainer/locator 9 which traverses the aperture 4 of the plug body 1 below the valve 5, and - at the upper end of the spring - the underside of the valve 5.
  • a guide rod 13 projects from the underside of the valve and cooperates with the spring 8 to maintain a longitudinal path of action on the valve.
  • the valve 5 is thereby movable, against the restoring force of the spring 8, between the closed position ( Figure 2), in which the valve 5 closes the aperture 4 in watertight manner, and the open position ( Figure 3), in which the aperture 4 is open to allow water to drain through the aperture 4 (see Arrows A in Figure 3).
  • the plug body 1 and the valve 5 are arranged such that the domed valve surface 6 extends substantially unshielded across the entire aperture 4 of the plug body 1. This surface 6 is thereby accessible for the user to conveniently override the valve 5.
  • the valve 5 can be conveniently depressed by the finger, heel or toe of a user of the bath, sink or the like, to override the resilient biassing of the valve 5 to the closed position.
  • the overflow preventer during the process of filling a bath, sink or the like will now be described briefly.
  • a user may start to fill a bath, sink or the like from a tap (faucet), and may then be distracted or called away while the filling continues.
  • the valve 5 is biassed against the plug body 1 to form a seal.
  • the hydrostatic pressure on the valve 5 increases. If filling is continued, the pressure on the valve 5 will overcome the bias and urge the valve to move off the plug body 1. The valve 5 will then move to the position shown in Figure 3.
  • a flow passage will then be opened and water will drain away (Arrows A).
  • water will continue to drain away until the hydrostatic pressure of water no longer overcomes the bias.
  • the spring 8 will then act again to urge the valve 5 back to the seat on the plug body 1, and will thereby prevent unnecessary loss of water through the drain hole.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Mechanical Engineering (AREA)
  • Sink And Installation For Waste Water (AREA)

Abstract

La présente invention concerne un dispositif anti-débordement qui présente généralement la forme d'un bouchon conventionnel d'un orifice de vidange (2) de bain, d'évier ou d'élément similaire (3) et qui en assure la fonction, le corps du bouchon (1) présentant une configuration annulaire entourant une ouverture (4) centrale circulaire. Un clapet (5) est placé souplement sous charge ressort, par en dessous, en contact de fermeture étanche avec ce corps de bouchon (1) à l'aide d'un ressort (8)de compression hélicoïdal. Lorsque la pression hydrostatique agissant sur le clapet (5) est inférieure à une valeur prédéterminée (correspondant à une petite hauteur d'eau dans le bain, l'évier ou l'élément similaire (3)) ce clapet (5) est dans sa position fermée comme le montre la figure. Lorsque la pression hydrostatique agissant sur le clapet (5) dépasse la valeur prédéterminée (correspondant à une hauteur d'eau dans le bain, l'évier ou l'élément similaire qui s'approche d'un risque de débordement) le ressort (8) est comprimé et le clapet (5) se déplace en position ouverte pour permettre à l'eau de s'évacuer par le dispositif anti-débordement. Le corps du bouchon (1) et le clapet (5) sont agencés de façon qu'une surface (6) dirigée vers le haut de ce clapet (5), contre laquelle la pression hydrostatique porte, se situe sensiblement sans élément pour faire écran à travers l'intégralité de l'ouverture (4) de ce corps de bouchon (1).
PCT/GB2001/002590 2000-06-29 2001-06-14 Dispositif anti-debordement Ceased WO2002002881A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001264093A AU2001264093A1 (en) 2000-06-29 2001-06-14 Overflow preventer

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB0015833.7 2000-06-29
GB0015833A GB0015833D0 (en) 2000-06-29 2000-06-29 Anti flood plug
GB0112933A GB0112933D0 (en) 2001-05-29 2001-05-29 Overflow preventer
GB0112933.7 2001-05-29

Publications (1)

Publication Number Publication Date
WO2002002881A1 true WO2002002881A1 (fr) 2002-01-10

Family

ID=26244558

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2001/002590 Ceased WO2002002881A1 (fr) 2000-06-29 2001-06-14 Dispositif anti-debordement

Country Status (2)

Country Link
AU (1) AU2001264093A1 (fr)
WO (1) WO2002002881A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2385520A (en) * 2002-02-26 2003-08-27 Simon Leigh Rose Overflow preventing trap
DE10318382B4 (de) * 2002-04-24 2008-01-24 Volker Listringhaus Ablauf für ein Becken
WO2012078581A3 (fr) * 2010-12-07 2012-10-11 Johnson Outdoors Inc. Bouchon de dalot ayant une vanne unidirectionnelle
CN105064472A (zh) * 2015-08-19 2015-11-18 王金春 能保持常开的翻板过滤下水器
EP4385374A4 (fr) * 2022-10-26 2024-06-19 Sanei Ltd. Dispositif d'évacuation

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US300552A (en) * 1884-06-17 Plug for bowls and bath-tubs
DE2263662A1 (de) * 1972-12-27 1974-07-04 Gewerk Keramchemie Stopfen fuer keramische becken
WO1991016847A1 (fr) * 1990-05-04 1991-11-14 Jattke, Udo Bouchon d'evacuation hydrostatique
GB2338184A (en) * 1998-11-24 1999-12-15 Mark Charles Forbes Plug for a liquid container

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US300552A (en) * 1884-06-17 Plug for bowls and bath-tubs
DE2263662A1 (de) * 1972-12-27 1974-07-04 Gewerk Keramchemie Stopfen fuer keramische becken
WO1991016847A1 (fr) * 1990-05-04 1991-11-14 Jattke, Udo Bouchon d'evacuation hydrostatique
GB2338184A (en) * 1998-11-24 1999-12-15 Mark Charles Forbes Plug for a liquid container

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2385520A (en) * 2002-02-26 2003-08-27 Simon Leigh Rose Overflow preventing trap
DE10318382B4 (de) * 2002-04-24 2008-01-24 Volker Listringhaus Ablauf für ein Becken
WO2012078581A3 (fr) * 2010-12-07 2012-10-11 Johnson Outdoors Inc. Bouchon de dalot ayant une vanne unidirectionnelle
US8763548B2 (en) 2010-12-07 2014-07-01 Johnson Outdoors Inc. Scupper plug with one-way valve
CN105064472A (zh) * 2015-08-19 2015-11-18 王金春 能保持常开的翻板过滤下水器
EP4385374A4 (fr) * 2022-10-26 2024-06-19 Sanei Ltd. Dispositif d'évacuation

Also Published As

Publication number Publication date
AU2001264093A1 (en) 2002-01-14

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