WO2025166379A1

WO2025166379A1 - Adjustable mount system for projection screen assembly

Info

Publication number: WO2025166379A1
Application number: PCT/US2025/014376
Authority: WO
Inventors: Brent ECKERLEY; Andrew James BURGESS; Adam MAVES; Eugena Elizabeth MACK
Original assignee: Legrand AV Inc
Current assignee: Legrand AV Inc
Priority date: 2024-02-02
Filing date: 2025-02-03
Publication date: 2025-08-07
Anticipated expiration: 2026-08-02

Abstract

A projection screen assembly having a projection screen housing with an upwardly facing groove and with a bottom edge, and two or more mounting assemblies. Each mounting assembly includes a top clamping assembly having a flange portion that operably engages with the upwardly facing groove, and a bottom clamping assembly that operably engages with the bottom edge. The bottom clamping assembly holds the weight of the projection screen assembly and the top clamping assembly prevents rotational tipping of the projection screen assembly. Each mounting assembly includes a first adjustment member arranged to shift the top and bottom clamping members between unclamped and clamped positions. The mounting assembly also includes a second adjustment member for shifting the housing between lowest and topmost positions for leveling the projection screen assembly.

Description

ADJUSTABLE MOUNT SYSTEM FOR PROJECTION SCREEN ASSEMBLY

RELATED APPLICATIONS

The present application claims the benefit of U.S. Provisional Application No. 63/549,035, entitled ADJUSTABLE MOUNT SYSTEM FOR PROJECTION SCREEN ASSEMBLY, filed February 2, 2024, said application being hereby fully incorporated herein in its entirety by reference.

TECHNICAL FIELD

The present application relates to screens for displaying images produced by video and film projectors, and more specifically, an adjustable mount system for projection screens that can be selectively wall, ceiling and in-ceiling mounted.

BACKGROUND

Dedicated projection screens are a common feature in conference rooms, lecture halls, and other settings where presentations are made to groups of people. It is often desirable for such screens to be concealed and deployed only when needed. Typically, the screen is stored on a roller within a housing, and the screen can be selectively deployed and retracted by rotating the roller. These projection screens are commonly wall, ceiling, and in-ceiling mounted.

A drawback of prior mounting assemblies for projection screens, however, is that the mounting assemblies require specific brackets for wall mounting that can differ for ceiling and/or in-ceiling mounting. Larger, wider screens can often require mounting assemblies that extend a great distance, such that the installation of mounting brackets on the desired substrate, such as a wall, can present challenges when the mounting surface is not even or level at each point of mounting and also across the span of mounting. Additionally, since the projection screen assembly can be quite heavy, the installation of prior mounting assemblies can be cumbersome, and the attachment of the prior mounting assemblies to the projection screen assembly can often be complex and not user friendly. Further, maintenance requirements on a projection screen assembly, such as replacing a motor assembly for an electric screen roller, can result in complex lift requirements and numerous personnel to remove the projection screen assembly from the mounting bracket(s) to complete the maintenance.

What is needed are mounting assemblies, systems and methods in conjunction with projection screens to address the drawbacks of prior mounting assemblies, systems and methods, including more effectively installing projection screens that can reduce high labor cost, low installation efficiency and poor user experience of the existing projection screen installation using prior mounting assemblies.

SUMMARY

According to embodiments of the present invention disclosed herein, mounts, systems, assemblies and methods are provided that enable installation of a projection screen to a desired substate that address the foregoing problems.

In some aspects, a projection screen system includes a projection screen assembly having a projection screen housing configured to house a projection screen, the projection screen housing having a main body having a top wall connecting opposing side walls and having an open bottom, the projection screen housing having at least a first groove located proximate the top wall and a bottom edge located proximate at least one of side walls. The projection screen system also includes one or more mounting assemblies configured to operably engage the projection screen housing, each mounting assembly having a top clamping assembly configured to operably engage a first portion of the projection screen housing located proximate the groove, and each mounting assembly having a bottom clamping assembly configured to operably engage a second portion of the projection screen housing located proximate the bottom edge. Each mounting assembly includes a first adjustment member and a second adjustment member, wherein the first adjustment member is configured to move the lower clamping assembly in a vertical direction in relation to the upper clamping assembly between an unclamped position and a clamped position, and wherein the second adjustment member is configured to move lower clamping assembly and upper clamping assembly in the vertical direction between a lowest position and a topmost position, which can be utilized in leveling the projection screen assembly. Top clamping assembly includes an upper jaw flange that can operably engage within a groove portion, and bottom clamping assembly includes a bottom jaw flange that can operably engage with bottom edge portion. The bottom clamping assembly is capable of holding the weight of the projection screen assembly, and the top clamping assembly capable of preventing rotational tipping of the projection screen assembly.

In some aspects, a mounting assembly for operably engaging with a projection screen housing of a projection screen assembly is disclosed. The project screen housing having a main body having a top wall connecting opposing side walls and having an open bottom, the projection screen housing having at least a first groove located proximate the top wall and a bottom edge located proximate at least one of side walls. Each mounting assembly includes a top clamping assembly configured to operably engage a first portion of the projection screen housing located proximate the groove, and a bottom clamping assembly configured to operably engage a second portion of the projection screen housing located proximate the bottom edge. Each mounting assembly can also include a first adjustment member configured to move the lower clamping assembly in a vertical direction in relation to the upper clamping assembly between an unclamped position and a clamped position. Each mounting assembly can further include a second adjustment member configured to move lower clamping assembly and upper clamping assembly in the vertical direction between a lowest position and a topmost position for leveling the projection screen assembly.

In embodiments, a projection screen system includes a projection screen assembly comprising a projection screen housing configured to house a projection screen, the projection screen housing having a main body with a top wall connecting opposing side walls and having an open bottom, the main body having at least one upwardly facing groove adjacent the top wall, at least one of the side walls defining a bottom edge, and a plurality of mounting assemblies adapted to operably engage the projection screen housing. Each mounting assembly has a top clamping assembly configured to operably engage the at least one upwardly facing groove, and a bottom clamping assembly configured to operably engage the bottom edge. Each mounting assembly further includes a first adjustment member and a second adjustment member, wherein the first adjustment member is configured to shift the lower clamping assembly in a vertical direction relative to the upper clamping assembly between an unclamped position and a clamped position, and wherein the second adjustment member is configured to shift the lower clamping assembly and upper clamping assembly in the vertical direction between a lowest position and a topmost position for leveling the projection screen assembly.

In embodiments, the main body has a pair of spaced-apart upwardly facing grooves disposed adjacent the top wall on opposing sides of the top wall, each one of the pair of spaced- apart upwardly facing grooves adapted to engage the top clamping assemblies of the plurality of mounting assemblies.

In embodiments, the top clamping assembly has a top plate with an upper jaw flange extending therefrom, and wherein the upper jaw flange is adapted to engage with the at least one upwardly facing groove of the main body of the projection screen housing.

In embodiments, the bottom clamping assembly has a top plate operably coupled to a lower jaw flange, and the lower jaw flange is adapted to engage with the bottom edge of the at least one of the side walls of the projection screen housing.

In embodiments, the top clamping assembly has a pair of spaced-apart side walls, each side wall of the top clamping assembly defining an elongate slot, the bottom clamping assembly has a pair of spaced apart side walls, each side wall of the bottom clamping assembly defining an elongate slot, and the top clamping assembly is slidably engaged with the bottom clamping assembly with each one of the side walls of the top clamping assembly abutting a respective one of the side walls of the bottom clamping assembly and the elongate slots of the top clamping assembly are registered with the elongate slots of the bottom clamping assembly, and a pair of spaced-apart pins extend through each of the respective registered elongate slots.

In embodiments, each one of the mounting assemblies includes a bracket having a top plate and a side plate, the top clamping assembly and the bottom clamping assembly being operably coupled with the bracket. The top clamping assembly and the bottom clamping assembly can be substantially housed in the bracket. Each pair of spaced-apart pins can be carried by the bracket.

In embodiments, the first adjustment member and the second adjustment member are threaded bolts.

In further embodiments, a projection screen housing of a projection screen assembly has a main body with a top wall opposing side walls and an open bottom, and the projection screen housing has at least one upwardly facing groove disposed adjacent the top wall, with at least one of the side walls presenting a bottom edge. A mounting assembly for the projection screen assembly includes a top clamping assembly configured to operably engage the upwardly facing groove, a bottom clamping assembly configured to operably engage the bottom edge, a first adjustment member configured to shift the lower clamping assembly in a vertical direction relative to the upper clamping assembly between an unclamped position and a clamped position, and a second adjustment member configured to shift the lower clamping assembly and upper clamping assembly together in the vertical direction between a lowest position and a topmost position for leveling the projection screen assembly.

In embodiments, the top clamping assembly has a top plate with an upper jaw flange extending therefrom, and the upper jaw flange is adapted to engage with the at least one upwardly facing groove of the main body of the projection screen housing. The bottom clamping assembly can have a top plate operably coupled to a lower jaw flange, wherein the lower jaw flange is adapted to engage with the bottom edge of the at least one of the side walls of the projection screen housing. In embodiments, the top clamping assembly has a pair of spaced-apart side walls, each side wall of the top clamping assembly defining an elongate slot, the bottom clamping assembly has a pair of spaced apart side walls, each side wall of the bottom clamping assembly defining an elongate slot, the top clamping assembly is slidably engaged with the bottom clamping assembly with each one of the side walls of the top clamping assembly abutting a respective one of the side walls of the bottom clamping assembly and the elongate slots of the top clamping assembly are registered with the elongate slots of the bottom clamping assembly, and a pair of spaced-apart pins extend through each of the respective registered elongate slots.

In embodiments, each one of the mounting assemblies includes a bracket having top plate and a side plate, the top clamping assembly and the bottom clamping assembly being operably coupled with the bracket. The top clamping assembly and the bottom clamping assembly can be substantially housed in the bracket. Each pair of spaced-apart pins can be carried by the bracket. The first adjustment member and the second adjustment member can be threaded bolts.

The above summary is not intended to describe each illustrated embodiment or every implementation of the subject matter hereof. The figures and the detailed description that follow more particularly exemplify various embodiments.

BRIEF DESCRIPTION OF THE DRAWINGS

Subject matter hereof may be more completely understood in consideration of the following detailed description of various embodiments in connection with the accompanying figures, in which:

FIG. 1A is a front top isometric view of a projection screen system having a projection screen assembly operably engaged with mounting assemblies, according to an embodiment of the present invention;

FIG. IB is a rear isometric view of the projection screen system of FIG. 1A with the projection screen housing of the projection screen assembly depicted as transparent for clarity;

FIG. 2A is a rear top isometric view of one end of the projection screen system of FIG.

IB depicting the projection screen housing operably engaged with a mounting assembly;

FIG. 2B is an exploded view of the mounting assembly of FIG. 2A;

FIG. 2C is a front isometric view of the mounting assembly of FIG. 2A;

FIG. 2D is a partial exploded rear isometric view of the bracket and the adjustment attachment assembly of the mounting assembly of FIG. 2A;

FIG. 2E is a partial exploded front isometric view of the bracket and the adjustment attachment assembly of the mounting assembly of FIG. 2A;

FIG. 3 A a front top isometric view of one end of the projection screen system of FIG. IB depicting the projection screen housing operably engaged with a mounting assembly;

FIG. 3B is an exploded view of the mounting assembly of FIG. 3 A;

FIG. 4A is a front view of one end of the projection screen system of FIG. IB showing the projection screen housing operably engaged with a mounting assembly;

FIG. 4B is a front view of the mounting assembly of FIG. 4A with the projection screen housing omitted for clarity;

FIG. 4C is a front view of the mounting assembly of FIG. 4B with the top clamping assembly omitted for clarity;

FIG. 4D is a front view of the mounting assembly of FIG. 4B with the top and bottom clamping assemblies both omitted for clarity;

FIG. 5A is an end view of projection screen system of FIG. IB showing the projection screen housing operably engaged with a mounting assembly;

FIG. 5B is a partially exploded view of the projection screen housing and mounting assembly of FIG. 5A with the bracket removed from the adjustment attachment assembly for clarity;

FIG. 5C is a rear view of the adjustment attachment assembly of FIG. 5B depicted without the bracket for clarity;

FIG. 5D is a side view of the adjustment attachment assembly of FIG. 5B depicted without the bracket for clarity;

FIG. 5E is a front view of the adjustment attachment assembly of FIG. 5B depicted without the bracket for clarity;

FIG. 6A is a partial end view of projection screen system of FIG. IB depicting the projection screen housing operably engaged with a mounting assembly in an unclamped position;

FIG. 6B is partial end view of the projection screen system of FIG. IB depicting the projection screen housing operably engaged with mounting assembly in a clamped position;

FIG. 7A is partial end view of projection screen system of FIG. IB depicting the mounting assembly adjusted in a lowest position;

FIG. 7B is partial end view of the projection screen system of FIG. IB depicting the mounting assembly adjusted in a topmost position;

FIG. 8A a front isometric view of a mounting assembly, according to an embodiment;

FIG. 8B is a side view of the mounting assembly of FIG. 8 A; FIG. 8C is a rear isometric view of the mounting assembly of FIG. 8A;

FIG. 8D is a front view of the mounting assembly of FIG. 8A with the bracket removed for clarity;

FIG. 8E is a partial exploded front isometric view of the bracket and the adjustment attachment assembly of the mounting assembly of FIG. 8 A;

FIG. 8F is a partial exploded view of the adjustment attachment assembly of FIG. 8E; and

FIG. 8G is a partial exploded side view of the adjustment attachment assembly of FIG. 8F.

While various embodiments are amenable to various modifications and alternative forms, specifics thereof have been shown by way of example in the drawings and will be described in detail. It should be understood, however, that the intention is not to limit the claimed inventions to the particular embodiments described. On the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the subject matter as defined by the claims.

DETAILED DESCRIPTION OF THE DRAWINGS

There is depicted in FIGS. 1A-1B a projection screen system 10 according to embodiments of the invention. As depicted in the embodiments shown in FIGS. 1 A-1B, projection screen system 10 generally includes projection screen assembly 20 configured to be operably engaged with one or more mounting assemblies 50. Although FIGS. 1A-1B depict three mounting assemblies 50, one of ordinary skill in the art will appreciate that two or more mounting assemblies 50 may be operably engaged with projection screen assembly 20 during normal operational use. In some preferred aspects, a mounting assembly 50 is operably engaged at each end of projection screen assembly 20, such that the entire axial length (L) of projection screen assembly 20 is operably engaged with and supported by mounting assemblies 50. In some other preferred aspects, a mounting assembly 50 is operably engaged at each end of projection screen assembly 20, and one or more mounting assembly 50 is operably engaged with projection screen assembly 20 at a location intermediate between the two end mounting assemblies 50, such that the entire axial length (L) of projection screen assembly 20 is operably engaged with and supported by mounting assemblies 50. Accordingly, the following disclosure regarding mounting assembly 50 is applicable to any mounting assembly 50 configured to be operably engaged with projection screen assembly 20.

Projection screen assembly 20 generally includes projection screen housing 22 having an interior cavity area 23 that can hold a projection screen 25, as depicted in FIG. IB. In some preferred aspects, projection screen 25 can be concealed within projection screen housing 22 when not in use, such as shown in FIG. IB, and then deployed from projection screen housing 22 during normal operational use (not depicted).

Projection screen housing 22 generally includes main body 24 that extends at least the length of projection screen 25, and preferably a distance longer than projection screen 25 and the other components of projection screen assembly 20, such as roller, electric motor, and the like, that are housed within interior cavity 23. In some aspects, projection screen housing 22 can also include a bottom plate (not depicted) and end plates (not depicted). Main body 24 is preferably a single structural component, more specifically a single extruded component. Main body 24 preferably has the configuration of an elongated extruded structure. In some preferred aspects, main body 24 comprises extruded aluminum. In some other aspects, main body 24 is not a single piece, but can be formed from two or more structural components.

As depicted in FIGS. IB, 2A, 5A and 6A-6B, main body 24 generally includes front wall 26, top wall 28, rear wall 30, and open bottom 32. The space between front wall 26, top wall 28, rear wall 30, and open bottom 32 generally defines the interior cavity 23 of main body 24. While these figures depict only one end portion of main body 24, one of ordinary skill will appreciate that front wall 26, rear wall 30 and top wall 28 extend the entire axial length (L). Open bottom 32 is defined by the space extending between rear edge 40 of front wall 26 and front edge 44 of rear wall 30. In some preferred aspects, as depicted in FIGS. 5A-5B, front wall 26 has angular portion 26c located proximate a transition area of main body 24 between front wall 26 and top wall 28. In some preferred aspects, rear wall 30 has angular portion 30c located proximate a transition area of main body 24 between rear wall 26 and top wall 28. In some preferred aspects, angular portions 26c, 30c have an arcing angular configuration.

Main body 24 has rear groove 38 and rear edge 40. In some preferred aspects, upwardly facing rear groove 38 is located a transition area of top wall 28 and proximal end 30a of rear wall 30. Rear edge 40 on rear wall 28 is preferably located proximate open bottom 32 where the rear wall 26 ends. In some aspects, wherein main body 24 has a substantially symmetrical configuration, main body 24 also has upwardly facing front groove 42 and front edge 44. In some preferred aspects, front groove 40 is located a transition area of top wall 28 and proximal end 26a of front wall 26. Front edge 44 on front wall 26 is preferably located proximate open bottom 32 where the front wall 26 ends. Rear groove 38 is accessible from the top side of main body 24 proximate top wall 28, and front groove 40 is accessible from the top side of main body 24 proximate top wall 28. As depicted, rear groove 38 and front groove 40 are spaced-apart and disposed adjacent opposing sides of top wall 28.

Rear groove 38 preferably has a channel or trough configuration with respect to the top surface of top wall 28, such that rear groove 38 extends toward the interior area cavity of projection screen housing 22. In some preferred aspects, the channel or trough configuration of rear groove 38 has a substantially U-shaped or V-shaped configuration. In some preferred aspects, rear groove 38 is defined by a first surface 38a and a second surface 38b with respect to top wall 28 and rear wall 30, wherein first surface 38a is connected with rear wall 30 and substantially perpendicular to top wall 28, and second surface 38b is connected with top wall 28 at a rear angle (R0). In some preferred aspects, first surface 38a operably connects with proximal end 30a of rear wall 30. Rear angle (R0) defined by second surface 38b and top wall 28 in relation to rear groove 38 is preferably between about 30° and about 60°, in some aspects between about 35° and about 55°, in some aspects between about 40° and about 50°, and in some aspects about 45°.

Front groove 42 preferably has a channel or trough configuration with respect to the top surface of top wall 28, such that front groove 42 extends toward the interior portion of projection screen housing 22. In some preferred aspects, the channel or trough configuration of front groove 42 has a substantially U-shaped or V-shaped configuration. In some preferred aspects, front groove 42 has a first surface 42a and a second surface 42b, wherein first surface 42a is connected with front wall 26 and substantially perpendicular to top wall 28, and second surface 42b is connected with top wall 28 at a front angle (F0). In some aspects, first surface 42a operably connects with proximal end 26a of front wall 26. Front angle (F0) defined by second surface 42b and top wall 28 in relation to front groove 42 is preferably between about 30° and about 60°, in some aspects between about 35° and about 55°, in some aspects between about 40° and about 50°, and in some aspects about 45°.

In some embodiments, front angle (F0) and rear angle (R0) are substantially the same.

In some preferred aspects, during normal operational use projection screen housing 22 operably engages with one or more mounting assemblies 50 via rear groove 38 and rear edge 40. In some other preferred aspects, during normal operational use projection screen housing 22 operably engages with one or more mounting assemblies 50 via front groove 42 and rear edge 44. One of ordinary skill in the art will appreciate that groove and edge configurations 38, 40, and 42, 44, enable universal connection of projection screen housing 22 to one or more mounting assemblies 50. Whether each mounting assembly 50 is operably engaged with groove-edge configuration 38, 40, or 42, 44, may depend upon whether projection screen assembly 20 has a front-type or back-type projection screen 25 that is contained and concealed within projection screen housing 22 when not in use, and then deployed from projection screen housing 22 during normal operational use.

During normal operational use, projection screen housing 22 is operably engaged with one or more mounting assemblies 50, in some aspects at least two mounting assemblies 50, and in some other aspects, two or more mounting assemblies 50.

In some preferred aspects, rear groove 38 and rear edge 40 operably connect with each mounting assembly 50 during normal operational use. In some other preferred aspects, rear groove 38 and rear edge 40 operably connect with each mounting assembly 50 and at least a portion of rear wall 30 is in direct contact with each mounting assembly 50, during normal operational use. The portion of rear wall 30 in direct contact with mounting assembly 50 is located proximate arcing angle 30c.

In some other preferred aspects, front groove 40 and front edge 44 operably connect with each mounting assembly 50 during normal operational use. In some other preferred aspects, front groove 40 and front edge 44 operably connect with each mounting assembly 50 and at least a portion of front wall 26 is in direct contact with each mounting assembly 50, during normal operational use. The portion of front wall 30 in direct contact with mounting assembly 50 is located proximate arcing angle 26c.

While the following disclosure relates to each mounting assembly 50 operably connected with projection screen housing 22 with respect to rear groove 38 and rear edge 40, one of ordinary skill in the art shall appreciate the disclosure is equally applicable to each mounting assembly 50 being operably connected with projection screen housing 22 with respect to front groove 42 and front edge 44.

Each mounting assembly 50 generally includes bracket 55 operably connected with an adjustable attachment assembly 80, as shown for example in FIGS. 2C-2E. In some aspects, bracket 55 provides operable support for adjustment attachment assembly 80 while also providing an interface for attachment to a substrate, such as a wall, ceiling or other object, to which it is desired to mount projection screen system 10.

In some preferred aspects, bracket 55 has top plate 60 and a side plate 70. Top plate 60 has a proximal end 61 and a distal end 63. Side plate 70 has a proximal end 71 and a distal end 73. Proximal end 61 of top plate 60 is connected to proximal end 71 of side plate 70, such that bracket 55 preferably is substantially L-shaped. In some preferred aspects, top plate 60 and side plate 70 are connected in a substantially 90° configuration.

Top plate 60 has a first aperture 62 and a second aperture 64, wherein the first and second apertures 62, 64, are preferably located proximate distal end 63. Each of first and second apertures 62, 64, are configured to be operably engaged with adjustable attachment assembly 80. In some preferred embodiments, first aperture 62 has a greater diameter than second aperture 64. Top plate 60 can also have one or more additional apertures 66 located between proximal end 61 and distal end 63. As depicted in FIGS. 2C, 2E, 3 A and 8A, top plate 60 can have two or more apertures 66. Where there are two or more apertures 66, at least two of the two or more apertures 66 can be spaced apart a distance and located in a different linear plane than first and second apertures 62, 64. Apertures 66 enable bracket 55 to be mounted to a horizontal surface of a substrate, such as a ceiling via a fastener, lag screw or the like.

Bracket 55 may have one or more side flanges 68 connected with top plate 60. Each side flange 68 is preferably connected with top plate 60 proximate a side edge of top plate 60 and extending away from the top surface of top plate 60 at a 90° angle. Each of the one or more side flanges 68 can provide rigidity and support to top plate 60. As depicted in FIGS. 2A and 4C, each of the one or more side flange 68 can obstruct the view of an ordinary observer of any components on top plate 60, such as hardware components relating to adjustment attachment assembly 80, thereby improving aesthetics.

Side plate 70 may have a first aperture 72 and a second aperture 74, wherein the first and second apertures 72, 74, are preferably located between proximal end 71 and distal end 73. Apertures 72, 74, enable bracket 55 to be mounted to a vertical surface of a substrate, such as a wall via a fastener, lag screw or the like.

In some preferred aspects, bracket 55 can have one or more inner plates 78, preferably two inner plates 78, each inner plate 78 having proximal end 78a, distal end 78b, proximal edge 78c and distal edge 78d. Preferably, proximal edge 78c of each inner plate 78 is connected with at least a portion of side plate 70. Each inner plate 78 is also preferably connected with at least a portion of side plate 70 at a 90° angle. In some aspects, proximal end 78a of each inner plate 78 can be connected with at least a portion of top plate 60. In some other aspects, proximal edge 78c of each inner plate 78 is in direct contact with at least a portion of side plate 70, and distal end 78b and distal edge 78d of each inner plate 78 are not in direct contact with top plate 60 or side plate 70.

In some preferred aspects, as depicted in FIG. 2E, proximal end 78a has a greater width than distal end 78b. In some preferred aspects, distal edge 78d has a first portion 78d’ and a second portion 78d”, whereby first portion 78d’ is substantially parallel with proximal edge 78c and second portion 78d” is angled with respect to proximal edge 78c. Each of the one or more inner plates 78 can provide support to side plate 70 and/or top plate 60. Each of the one or more inner plates 78 can obstruct the view of an ordinary observer of any hardware components relating to adjustment attachment assembly 80, thereby improving aesthetics.

In some preferred aspects, such as depicted in FIGS. 8A and 8E, bracket 55 can have a bottom plate 75. Preferably, bottom plate 75 is connected with side plate 70 and each of inner plates 78. Bottom plate 75 can have a first aperture 77 and a second aperture 79. Each of first and second apertures 75, 77, are configured to be operably engaged with adjustable attachment assembly 80. In some preferred aspects, first aperture 77 operably engages with adjustment member 85a, and second aperture 79 operably engages with adjustment member 85b. Bottom plate 75 can provide support to adjustable attachment assembly 80 in the lateral (X) direction, in the axial length (L) direction and/or the lateral (X) direction, and/or in the longitudinal (Y) direction.

Top plate 60, side plate 70, and inner plates 78 define an inner channel area 55a between inner plates 78 and extending from top plate 60 to distal end 73 of side plate 70 of bracket 55, and inner channel area 55a is conformingly shaped to substantially house adjustment attachment assembly 80. In some embodiments, top plate 60, side plate 70, inner plates 78 and bottom plate 75 define inner channel area 55a between inner plates 78 and extending from top plate 60 to bottom plate 75, such that inner channel area 55a is conformingly shaped to substantially house adjustment attachment assembly 80. As depicted in FIGS. 5A, 7A-7B and 8C, while inner channel area 55a of bracket 55 substantially houses adjustment attachment assembly 80, one or more portions of adjustment attachment assembly 80 extend from inner channel area 55a during normal operational use to operably connect with the respective groove/edge configuration 38, 40 or 42, 44, of projection screen housing 22. In some preferred aspects, at least a portion of top clamping assembly 82 extends from the inner channel area 55a to operably connect with one of grooves 38, 42, and at least a portion of bottom clamping assembly 92 extends from inner channel area 55a to operably connect with respective edge 40, 44.

In some preferred aspects, besides operably connecting with one or more portions of adjustment attachment assembly 80 that extends from inner channel area 55a, bracket 55 also operably interacts with at least one portion of adjustment attachment assembly 80 within inner channel area 55a during normal operational use. Bracket 55 can have one or more pins 79 connected with each inner plate 78. Each of the one or more pins 79 are preferably fixed to each respective inner plate 78. In some preferred aspects, each inner plate 78 has at least one pin 79. In some other aspects, each inner plate has two or more pins 79. Each pin 79 preferably extends from inner plate 78 into inner channel area 55a to operably engage with at least a portion of adjustment attachment assembly 80. In some preferred aspects, each inner plate 78 has at least one pin 79, in some other aspects at least two pins 79, extending into inner channel area 55a. Each pin 79 may be press fit into a corresponding aperture located proximate inner plate 78.

Where at least two pins 79 with respect to an inner plate 78 are provided, each of the pins are preferably arranged in a vertical configuration and spaced apart a distance between about 0.25 inches and 3 inches, in some aspects 0.5 inches and 2 inches, in some aspects between 0.75 inches and 1.75 inches, and in some preferred aspects between about 1.0 inches and about 1.5 inches.

Adjustment attachment assembly 80 generally includes top clamping assembly 82 operably coupled with bottom clamping assembly 92 via one or more adjustment members 85. In some preferred aspects, the distance between top clamping assembly 82 and bottom clamping assembly 92 can be adjusted, such that top clamping assembly 82 and bottom clamping assembly 92 of each mounting assembly 50 can be used in concert with each other for operably attaching projection screen housing 22 with each mounting assembly 50.

Top clamping assembly 82 has top plate 83 connected with opposing side plates 84 and upper jaw flange 86, wherein each of opposing side plate 84 are connected with top plate 83 at a substantially 90° angle. In some preferred aspects, upper jaw flange 86 is connected with top plate 83 forming an L-shaped or J-shaped hook type configuration. In preferred aspects, opposing side plates 84 have a longitudinal extension away from top plate 83 that is greater than upper jaw flange 86.

In some preferred aspects, upper jaw flange 86 has a width in the axial length (L) direction in relation to groove 38, 42, of projection screen housing 22 that is between about 1 inch and 6 inches, in some aspects between 1.5 inches and 5 inches, in some aspects between 2 inches and 4 inches, and in some preferred aspects between 2.5 inches and 3.5 inches.

In some preferred aspects, upper jaw flange 86 has a height in the longitudinal (Y) direction in relation to groove 38, 42, of projection screen housing 22 that is between about 0.5 inches and 3 inches, in some aspects between 0.75 inches and 2 inches, in some aspects between 1 inch and 1.5 inches, and in some preferred aspects between 1.125 inches and 1.385 inches. In some aspects, upper jaw flange 86 is substantially rigid such that there is essentially no movement in the lateral (X) direction during normal operational use.

Top plate 83 has a first aperture 87a and a second aperture 87b, wherein first and second apertures 87a, 87b, are located proximate the opposite side of upper jaw flange 86. Each of first and second apertures 87a, 87b, are configured to be operably engaged with proximal ends 85a, 85b of respective adjustment members 85.

Each of opposing side plates 84 have slot 89. Slot 89 preferably is an elongated slot extending in a vertical direction. In some preferred aspects, each slot 89 is an elongated slot with a length that is between about 0.5 inches and about 6 inches, in some aspects between about 0.75 inches and 4 about inches, in some aspects between about 1 inch and about 3 inches, and in some preferred aspects between about 1.5 inches and about 2.5 inches. During normal operable adjustment of adjustment attachment assembly 80, each slot 89 operably engages with pins 79, such that pins 79 operably move within respective slot 89, with each pin 79 preferably moving in a vertical direction within respective slot 89, as depicted in FIGS. 7A-7B.

In some preferred aspects, each inner plate 78 has at least two pins 79, and the distance between the at least two pins 79 and the elongated configuration of each slot 89 provides for pins 79 being capable of moving in the longitudinal (Y) direction within respective slot 89 to provide a vertical adjustment between about 0.25 inches and about 3 inches, in some aspects between about 0.5 inches and about 2 inches, in some preferred aspects between about 0.75 inches and about 1.5 inches, and in some more preferrable aspects about 1 inch. In an upmost adjusted position, such as shown in FIG. 7A, bottom pin 79 contacts the bottom edge of slot 89. In a lowest adjusted position, such as shown in FIG. 7B, top pin 79 contacts the top edge of slot 89.

In some preferred aspects, each inner plate 78 has at least one pin 79, and the longitudinal (Y) distance each pin 79 moves within each respective slot 89 to provide a vertical adjustment is between about 0.25 inches and about 3 inches, in some aspects between about 0.5 inches and about 2 inches, in some preferred aspects between about 0.75 inches and about 1.5 inches, and in some more preferrable aspects about 1 inch. In an upmost adjusted position, pin 79 operably contacts the bottom edge of slot 89. In a lowest adjusted position pin 79 operably contacts the top edge of slot 89.

Bottom clamping assembly 92 has top plate 93 connected to lower jaw flange 96 via one or more side plates 94, wherein each side plate 94 is connected with top plate 93 in at a 90° angle. In some preferred aspects, lower jaw flange 96 extends from one or more side plates 94 in an opposite direction than top plate 93, such that the one or more side plates 94 and lower jaw flange 96 form an L-shaped or J-shaped hook type configuration. In preferred aspects, top plate 93 extends away from one or more side plates 94 a greater distance than lower jaw flange 96. Top plate 93 has a first aperture 97a and a second aperture 97b, wherein each of first and second apertures 97a, 97b are configured to be operably engaged with adjustment members 85a, 85b.

In some aspects, bottom clamping assembly 92 can also have opposing side plates 95, each side plate 95 having slot 99. Slot 99 preferably is an elongated slot extending in a vertical direction. In some preferred aspects, each slot 99 is elongated, with a length that is between about 0.5 inches and about 6 inches, in some aspects between about 0.75 inches and about 4 inches, in some aspects between about 1 inch and about 3 inches, and in some preferred aspects between about 1.5 inches and about 2.5 inches. In some preferred aspects, each slot 99 has a length that is greater than that of slot 89 of top clamping assembly 82. In some other aspects, each slot 99 has a length that is about the same as that of slot 89 of top clamping assembly 82.

During normal operable adjustment of adjustment attachment assembly 80, each slot 89 and each slot 99 operably engages with respective pin(s) 79, such that one or more pins 79 operably move within respective slots 89, 99, with each pin 79 moving in a vertical direction within respective slots 89, 99.

In embodiments of bottom clamping assembly 92 having opposing side plates 95 with slot 99 that operably engages with one or more pins 79, the configuration provides additional support in the lateral (X) direction to the bottom clamping assembly 92.

In some preferred aspects, bottom clamping assembly 92 enables some movement in the lateral (X) direction proximate lower jaw flange 96. The movement in the lateral (X) direction of lower jaw flange 96 enables easier attachment of lower jaw flange 96 with bottom edge 40, 44 of projection screen housing 22. In some aspects, lower jaw flange 96 can be pushed in the lateral (X) direction towards side plate 70, which enables bottom edge 40, 44 of projection screen housing 22 to be pushed into lower jaw flange 96. In some aspects, lower jaw flange 96 has a springing type action when bottom edge 40, 44 of projection screen housing 22 is pushed into lower jaw flange 96.

In some aspects, lower jaw flange 96 is capable of moving in the lateral (X) direction a distance between about 0.25 inches and about 1.5 inches, in some aspects between about 0.35 inches and about 1.25 inches, in some aspects between about 0.4 inches and about 1.125 inches, and in some preferred aspects between about 0.5 inches and about 1.0 inch.

Adjustment attachment assembly 80 generally includes two adjustment members 85, each adjustment member protruding from top plate 60 of bracket 55 and extending to the bottom side of inner cavity 55a located proximate distal ends 73, 78b. In some embodiments, each adjustment member protrudes from bottom plate 75. The two adjustment members 85 are preferably substantially parallel. In some aspects, each adjustment member 85 is a threaded bolt that is configured to operably engage with one or more nuts. In some other aspects, at least a portion of adjustment member 85 is threaded to operably engage with one or more nuts. In some preferred aspects, at least a portion of each end of adjustment member 85 is threaded to operably engage with one or more nuts.

In some preferred aspects, first adjustment member 85a extends between top plate 60 and the bottom side of inner cavity 55a located proximate distal ends 73, 78b. In some other preferred aspects, first adjustment member 85a extends between top plate 60 and bottom plate 75 of bracket 55. First adjustment member 85a preferably extends from top plate 60 via first aperture 62. In some aspects, first adjustment member 85a extends from bottom plate 75 via first aperture 77.

Referring now to FIGS. 6A-6B, first adjustment member 85a can be configured to operably adjust the longitudinal (Y) distance between top clamping assembly 82 and bottom clamping assembly 92. In some preferred aspects, first adjustment member 85a is configured to operably adjust the longitudinal (Y) distance between upper jaw flange 86 and lower jaw flange 96. In some preferred aspects, first adjustment member 85a is configured to operably adjust the longitudinal (Y) distance between upper jaw flange 86 and lower jaw flange 96 between an unclamped position (as depicted in FIG. 6A) and a clamped position (as depicted in FIG. 6B). One of ordinary skill in the art will appreciate that there is a greater longitudinal (Y) distance between upper jaw flange 86 and lower jaw flange 96 in the unclamped position than in the clamped position. One of ordinary skill in the art will also appreciate that the unclamped position may have one or intermediate unclamped positions between a fully unclamped position and a fully clamped position. Bottom clamping assembly 92 preferably moves between the unclamped position and the clamped position while the top clamping assembly 82 remains stationary, such that lower jaw flange 96 moves vertically with respect to upper jaw flange 86.

In the unclamped position, such as depicted in FIG. 6A, projection screen housing 22 can be lifted into mounting assembly 50 with groove 38, 42, positioned to operably engage with upper jaw flange 86 while edge 40, 44, is pushed against lower jaw flange 96 until edge 40, 44, is pushed past lower jaw flange 96, which in some aspects performs a hook-spring action. Projection screen housing 22 can then be set into lower jaw flange 96 holding the weight of projection screen housing 22 while upper jaw flange 86 operably engages within groove 38, 42, preventing projection screen housing 22 from tipping and/or rolling out of position. First adjustment member 85a can then be operably rotated to transition from the unclamped position to the clamped position.

In some preferred aspects, first adjustment member 85a has a top portion 85a’ that is in direct contact with top plate 83 of top clamping assembly 82. Top portion 85a’ can have a head that enables rotating adjustment member 85a. For example, the head can be a welded nut, welded wingnut, bolthead, castle nut held by a roll pin, or insertion drive for receiving a tool. Top portion 85a’ can be rotated with respect to top plate 83 while simultaneously rotating first adjustment member 85a. In some other aspects, first adjustment member 85a has a bottom portion 85a’” that is located the bottom side of bracket 55, which can be accessed from below mounting assembly 50 to operably rotate first adjustment member 85a. Bottom portion 85a’” can also have a head that enables rotating adjustment member 85a, such as a welded nut, welded wingnut, bolthead, castle nut held by a roll pin, or insertion drive for receiving a tool.

Top plate 93 of bottom clamping assembly 92 preferably has corresponding threads to adjustment member 85a, such as a weld nut 85a” attached proximate top plate 93, or in some other aspects first aperture 97a of top plate 93 can be threaded. In some preferred aspects, rotation of first adjustment member 85a via top portion 85a’ or bottom portion 85a’” causes first adjustment member 85a to rotate with respect to the threaded portion located proximate top plate 93, causing bottom clamping assembly 92 to move in the longitudinal (Y) direction with respect to top clamping assembly 82. Rotation of first adjustment member 85a in a first rotational direction can drive bottom clamping assembly 92 and lower jaw flange 96 towards the unclamped position, which results in greater vertical distance between upper jaw flange 86 and lower jaw flange 96. Rotation of first adjustment member 85a in a second rotational direction can drive bottom clamping assembly 92 and lower jaw flange 96 towards the clamped position, which results in less vertical distance between upper jaw flange 86 and lower jaw flange 96.

First adjustment member 85a can have a means for limiting the distance of travel of bottom clamping assembly 92 in the longitudinal (Y) direction, so as to limit the distance between an unclamped position (as shown in FIG. 6A) and a clamped position (as shown in FIG. 6B). In some preferred aspects, as depicted in FIGS. 4D and 5C, the means for limiting the distance of travel of bottom clamping assembly 92 in the longitudinal (Y) direction with respect to the top clamping assembly 82 can be two opposing hex nuts 85x configured as a lug nut. In some other preferred aspects, as depicted in FIGS. 8A-8E, the means for limiting the distance of travel of bottom clamping assembly 92 in the longitudinal (Y) direction with respect to the top clamping assembly 82 can be a spacer 85y, whereby the spacer has a longitudinal length that is less than first adjustment member 85a.

Referring now to FIGS. 7A-7B and 8A-8E, second adjustment member 85b can be configured to operably adjust the longitudinal (Y) distance of both top clamping assembly 82 and bottom clamping assembly 92 as a single unit. In some preferred aspects, second adjustment member 85b is configured to operably adjust the longitudinal distance (Y) of both upper jaw flange 86 and lower jaw flange 96 at the same time as a set. Adjustment of both upper jaw flange 86 and lower jaw flange 96 as a single unit enables vertical adjustment in longitudinal (Y) direction of each adjustable attachment assembly 80 with respect to the respective bracket 55, which enables a vertical adjustment for leveling of projection screen assembly 20. In some preferred aspects, second adjustment member 85b is configured to operably adjust the longitudinal distance (Y) of both upper jaw flange 86 and lower jaw flange 96 between a lowest position (as shown in FIG. 7A) and a topmost position (as shown in FIG. 7B). Both top clamping assembly 82 and bottom clamping assembly 92 move at the same time as single unit between the lowest position and the topmost position or any intermediate position therebetween, such that both upper jaw flange 86 and lower jaw flange 96 that are operably engaged with projection screen assembly 20 are configured to move as a single unit.

In some preferred aspects, second adjustment member 85b has a top portion 85b’ that is in direct contact with top plate 60 of bracket 55. Top portion 85b’ can have a head that allows for rotating adjustment member 85b with respect to top plate 60, such as a welded nut, welded wingnut, bolthead, castle nut held by a roll pin, or insertion drive for receiving a tool, and the like. In some other aspects, second adjustment member 85b has a bottom portion 85b’” that is located the bottom side of bracket 55. Bottom portion 85b’” can have a head that allows for rotating adjustment member 85b, such as a welded nut, welded wingnut, bolthead, castle nut held by a roll pin, or insertion drive for receiving a tool, and the like.

Top plate 83 of top clamping assembly 82 preferably has threads corresponding to adjustment member 85b, such as a weld nut 85b” attached proximate top plate 83, or in some other aspects second aperture 87b of top plate 83 is threaded. In some preferred aspects, rotation of second adjustment member 85b via top portion 85b’ or bottom portion 85b’” causes second adjustment member 85b to rotate with respect to the threaded portion located proximate top plate 83 causing top clamping assembly 82 and bottom clamping assembly 92 to move in the longitudinal (Y) direction. Second adjustment member 85b is limited in the distance of travel of both top clamping assembly 82 and bottom clamping assembly 92 with respect to both the lowest position and the topmost position via one or more pins 79 operably engaging with slot 89 of top clamping assembly 82. As shown in FIG. 7A, adjustment attachment assembly 80 is adjusted to the lowest position, such that the topmost pin 79 operably engages the top edge of elongated slot 89. In the lowest position, the topmost clamping assembly 82 and bottom clamping assembly 92 are both located the furthest distance away from top plate 60. As shown in FIG. 7B, adjustment attachment assembly 80 is adjusted to the topmost position, such that bottom pin 79 operably engages the bottom edge of elongated slot 89. In the topmost position, top clamping assembly 82 and bottom clamping assembly 92 are both located the closest distance away from top plate 60. In some embodiments as depicted in FIGS. 8A-8E, there is only one pin 79 that operable engages the top edge of elongated slot 89 in the lowest position and operably engages the bottom edge of elongated slot 89 in the topmost position.

One of ordinary skill in the art will appreciate that each mounting assembly 50 is independent, enabling the mounting assemblies 50 to be adjusted individually in relation to projection screen assembly 20 to obtain a level configuration. In some aspects, one mounting assembly 50 may have a different vertical adjustment via second adjustment member 85a than one or more other mounting assemblies 50 in order to obtain the projection screen assembly 20 at a level configuration.

In some preferred aspects, top portion 85a’ and bottom portion 85a’” of first adjustment member 85a have a different configuration than top portion 85b’ and bottom portion 85b’” of second adjustment member 85b to prevent confusion between the two different adjustments. In some preferred aspects, the configuration of top portion 85a’ and bottom portion 85a’” is a hexnut requiring the use of a tool, such as a wrench, for clamping and unclamping adjustments, which can help prevent unintentional unmounting of the projection screen assembly 20 from mounting assembly 50, while the configuration of top portion 85b’ and bottom portion 85b’” can be a wingnut that does not requiring any tool, such that leveling adjustments can be made with more ease.

As depicted in FIGS. 5A and 6A-6B, while bracket 55 substantially houses adjustment attachment assembly 80, one or more portions of adjustment attachment assembly 80 extend from the inner channel area 55a of bracket 55 to operably connect with the groove 38, 42, and edge 40, 44„ respectively, of projection screen housing 22. In some preferred aspects, at least a portion of top clamping assembly 82, such as top jaw flange 86, extends from the inner channel area of bracket 55 to operably connect with rear groove 38 or front groove 42 and at least a portion of bottom clamping assembly 92, such as bottom jaw flange 96, extends from the inner channel area 55a of bracket 55 to operably connect with rear edge 40 or front edge 44, respectively.

In some preferred aspects, at least a portion of rear wall 30 is also in direct contact with mounting assembly 50 during normal operational use, which preferably includes at least a portion of arcing angle 30c of rear wall 30 and at least a portion of distal edge 78d of inner plate 78, and even more preferably includes at least a portion of arcing angle 30c of rear wall 30 and at least a portion of distal edge 78d located proximate second portion 78d”.

Various embodiments of systems, devices, and methods have been described herein. These embodiments are given only by way of example and are not intended to limit the scope of the claimed inventions. It should be appreciated, moreover, that the various features of the embodiments that have been described may be combined in various ways to produce numerous additional embodiments. Moreover, while various materials, dimensions, shapes, configurations and locations, etc. have been described for use with disclosed embodiments, others besides those disclosed may be utilized without exceeding the scope of the claimed inventions.

Persons of ordinary skill in the relevant arts will recognize that the subject matter hereof may comprise fewer features than illustrated in any individual embodiment described above. The embodiments described herein are not meant to be an exhaustive presentation of the ways in which the various features of the subject matter hereof may be combined. Accordingly, the embodiments are not mutually exclusive combinations of features; rather, the various embodiments can comprise a combination of different individual features selected from different individual embodiments, as understood by persons of ordinary skill in the art. Moreover, elements described with respect to one embodiment can be implemented in other embodiments even when not described in such embodiments unless otherwise noted.

Although a dependent claim may refer in the claims to a specific combination with one or more other claims, other embodiments can also include a combination of the dependent claim with the subject matter of each other dependent claim or a combination of one or more features with other dependent or independent claims. Such combinations are proposed herein unless it is stated that a specific combination is not intended.

Any incorporation by reference of documents above is limited such that no subject matter is incorporated that is contrary to the explicit disclosure herein. Any incorporation by reference of documents above is further limited such that no claims included in the documents are incorporated by reference herein. Any incorporation by reference of documents above is yet further limited such that any definitions provided in the documents are not incorporated by reference herein unless expressly included herein.

For purposes of interpreting the claims, it is expressly intended that the provisions of 35 U.S.C. § 112(f) are not to be invoked unless the specific terms “means for” or “step for” are recited in a claim.

Claims

CLAIMS What is claimed is:

1. A projection screen system, comprising: a projection screen assembly comprising a projection screen housing configured to house a projection screen, the projection screen housing having a main body with a top wall connecting opposing side walls and having an open bottom, the main body having at least one upwardly facing groove adjacent the top wall, at least one of the side walls defining a bottom edge; a plurality of mounting assemblies adapted to operably engage the projection screen housing, each mounting assembly having a top clamping assembly configured to operably engage the at least one upwardly facing groove, and each mounting assembly having a bottom clamping assembly configured to operably engage the bottom edge, each mounting assembly further comprising a first adjustment member and a second adjustment member, wherein the first adjustment member is configured to shift the lower clamping assembly in a vertical direction relative to the upper clamping assembly between an unclamped position and a clamped position, and wherein the second adjustment member is configured to shift the lower clamping assembly and upper clamping assembly in the vertical direction between a lowest position and a topmost position for leveling the projection screen assembly.

2. The projection screen system of claim 1, wherein the main body has a pair of spacedapart upwardly facing grooves disposed adjacent the top wall on opposing sides of the top wall, each one of the pair of spaced-apart upwardly facing grooves adapted to engage the top clamping assemblies of the plurality of mounting assemblies.

3. The projection screen system of claim 1, wherein the top clamping assembly has a top plate with an upper jaw flange extending therefrom, and wherein the upper jaw flange is adapted to engage with the at least one upwardly facing groove of the main body of the projection screen housing.

4. The projection screen system of claim 1 or claim 3, wherein the bottom clamping assembly has a top plate operably coupled to a lower jaw flange, and wherein the lower jaw flange is adapted to engage with the bottom edge of the at least one of the side walls of the projection screen housing.

5. The projection screen system of claim 1, wherein the top clamping assembly has a pair of spaced-apart side walls, each side wall of the top clamping assembly defining an elongate slot, wherein the bottom clamping assembly has a pair of spaced apart side walls, each side wall of the bottom clamping assembly defining an elongate slot, wherein the top clamping assembly is slidably engaged with the bottom clamping assembly with each one of the side walls of the top clamping assembly abutting a respective one of the side walls of the bottom clamping assembly and the elongate slots of the top clamping assembly are registered with the elongate slots of the bottom clamping assembly, and wherein a pair of spaced-apart pins extend through each of the respective registered elongate slots.

6. The projection screen system of claim 1, claim 2, claim 3, or claim 5, wherein each one of the mounting assemblies includes a bracket having a top plate and a side plate, the top clamping assembly and the bottom clamping assembly being operably coupled with the bracket.

7. The projection screen system of claim 6, wherein the top clamping assembly and the bottom clamping assembly are substantially housed in the bracket.

8. The projection screen system of claim 6, wherein each pair of spaced-apart pins are carried by the bracket.

9. The projection screen system of claim 1, wherein the first adjustment member and the second adjustment member are threaded bolts.

10. A mounting assembly for a projection screen housing of a projection screen assembly, the projection screen housing having a main body with a top wall opposing side walls and an open bottom, the projection screen housing having at least one upwardly facing groove disposed adjacent the top wall, at least one of the side walls presenting a bottom edge, the mounting assembly comprising: a top clamping assembly configured to operably engage the upwardly facing groove; a bottom clamping assembly configured to operably engage the bottom edge; a first adjustment member configured to shift the lower clamping assembly in a vertical direction relative to the upper clamping assembly between an unclamped position and a clamped position; and a second adjustment member configured to shift the lower clamping assembly and upper clamping assembly together in the vertical direction between a lowest position and a topmost position for leveling the projection screen assembly.

11. The mounting assembly of claim 10, wherein the top clamping assembly has a top plate with an upper jaw flange extending therefrom, and wherein the upper jaw flange is adapted to engage with the at least one upwardly facing groove of the main body of the projection screen housing.

12. The mounting assembly of claim 10 or claim 11, wherein the bottom clamping assembly has a top plate operably coupled to a lower jaw flange, and wherein the lower jaw flange is adapted to engage with the bottom edge of the at least one of the side walls of the projection screen housing.

13. The mounting assembly of claim 10, wherein the top clamping assembly has a pair of spaced-apart side walls, each side wall of the top clamping assembly defining an elongate slot, wherein the bottom clamping assembly has a pair of spaced apart side walls, each side wall of the bottom clamping assembly defining an elongate slot, wherein the top clamping assembly is slidably engaged with the bottom clamping assembly with each one of the side walls of the top clamping assembly abutting a respective one of the side walls of the bottom clamping assembly and the elongate slots of the top clamping assembly registered with the elongate slots of the bottom clamping assembly, and wherein a pair of spaced-apart pins extend through each of the respective registered elongate slots.

14. The mounting assembly of claim 10, claim 11, or claim 13, wherein each one of the mounting assemblies includes a bracket having a top plate and a side plate, the top clamping assembly and the bottom clamping assembly being operably coupled with the bracket.

15. The mounting assembly of claim 14, wherein the top clamping assembly and the bottom clamping assembly are substantially housed in the bracket.

16. The mounting assembly of claim 14, wherein each pair of spaced-apart pins are carried by the bracket.

17. The mounting assembly of claim 10, wherein the first adjustment member and the second adjustment member are threaded bolts.