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US3695746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible screen assembly
Assignee: Individual
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Filing: 1970-04-06
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Granted: 1972-10-03
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Expires: 1990-04-06
Abstract
Abstract A collapsible screen assembly for a self-contained audio-visual apparatus comprising a forward wall having a translucent screen, a pair of foldable, spring-loaded side walls securing said forward wall to opposite sides of a projection opening in a front wall of the apparatus, and a hood pivotably secured to said front wall above said side walls so as to enclose said forward and side walls when folded and provide a light shield above said forward and side walls when the latter are opened. One side wall can be detached from said front wall and secured to the other side of said projection opening, thereby to provide a front screen projector. The assembly includes various brackets, locating posts, and other members, for facilitating operation, locking, and alignment of the screen assembly.
Inventors
- 👤 Donald A Youngblood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:43
CPC Classifications
G; G09; G09B; G09B5/00; G09B5/06; G09B5/067; G03; G03B; G03B21/00; G03B21/14; G03B21/30; G03B31/00; G03B31/06
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
329 words
A collapsible screen assembly for a self-contained projector having a vertical planar front wall which includes a centrallylocated opening for passing a beam of light from said projector and a hood which is pivotably secured about a horizontal axis mounted adjacent the top edge of said front wall, said assembly comprising a forward wall having a translucent screen, a pair of extendable side walls, each of said side walls being pivotably secured to said front wall on opposite sides of said opening, one of said side walls being pivotably secured to said front wall of said projector by a separable hinge, said front wall containing, between said opening and the hinge of said other of said walls, a securing member for detachably securing the edge of said one side wall such that said one side wall may be detached at said separable hinge and secured to said securing means so that said beam of light may be projected through said opening to a viewing surface remote from said projector, each of said side walls comprising a forward plate, a rear plate, and a spring loaded hinge pivotably securing said forward and rear plates together and urging said forward and rear plates to a 180* relationship when said screen assembly is open, said side walls each being pivotably connected to said forward wall, said forward wall including locating members which extend upwardly from the top edge of said wall at opposite ends thereof, said hood having positioning means adjacent the edge opposite the pivotable edge thereof for engaging said locating members when said forward wall is fully extended from said front wall, said screen assembly being capable of being stored adjacent said front wall by collapsing said side walls and moving said forward wall toward said front wall and thereafter pivoting said hood to fold over said forward wall such that said forward wall, said hood, said plates of said side walls, and said front wall are all substantially parallel.
Claim 2
Dependent Claim
329 words
A collapsible screen assembly for a self-contained projector having a vertical planar front wall which includes a centrallylocated opening for passing a beam of light from said projector and a hood which is pivotably secured about a horizontal axis mounted adjacent the top edge of said front wall, said assembly comprising a forward wall having a translucent screen, a pair of extendable side walls, each of said side walls being pivotably secured to said front wall on opposite sides of said opening, one of said side walls being pivotably secured to said front wall of said projector by a separable hinge, said front wall containing, between said opening and the hinge of said other of said walls, a securing member for detachably securing the edge of said one side wall such that said one side wall may be detached at said separable hinge and secured to said securing means so that said beam of light may be projected through said opening to a viewing surface remote from said projector, each of said side walls comprising a forward plate, a rear plate, and a spring loaded hinge pivotably securing said forward and rear plates together and urging said forward and rear plates to a 180* relationship when said screen assembly is open, said side walls each being pivotably connected to said forward wall, said forward wall including locating members which extend upwardly from the top edge of said wall at opposite ends thereof, said hood having positioning means adjacent the edge opposite the pivotable edge thereof for engaging said locating members when said forward wall is fully extended from said front wall, said screen assembly being capable of being stored adjacent said front wall by collapsing said side walls and moving said forward wall toward said front wall and thereafter pivoting said hood to fold over said forward wall such that said forward wall, said hood, said plates of said side walls, and said front wall are all substantially parallel.
Claim 3
Dependent Claim
44 words
The screen assembly of claim 1 wherein said forward plates of said side walls each include a pair of rearwardly extending fingers arranged to prevent the outer surfaces of each pair of forward and rear plates from being angularly related by greater than 180*.
Claim 4
Dependent Claim
57 words
The screen assembly of claim 1 wherein said hood includes at its lowermost edge, a bracket which is arranged to receive said locating posts as it rests on the top edge of said screen assembly, said hood also including a peripheral flange whIch is arranged to prevent light from entering said screen assembly through the top thereof.
Claim 5
Dependent Claim
47 words
The screen assembly of claim 1 wherein said forward plate of each of said side walls is wider than said rear plate thereof, and wherein said forward wall is wider than the spacing of said points of pivotal securement of said side walls on said front wall.
Claim 6
Dependent Claim
315 words
A collapsible screen assembly for a self-contained projector of the type comprising a carrying case having a hood hinged adjacent an upper edge thereof and pivotable through about 90* from a closed position parallel to a front wall of said case to an open position substantially normal to said front wall, said case containing an optical system arranged to project a beam of light, through an opening in said front wall onto a translucent viewing screen mounted on a forward wall which is connected to said front wall by a pair of collapsible side walls that permit said forward wall to be moved from a position adjacent and parallel to said front wall to an extended position remote from but still parallel to said front wall, said side walls each comprising a front plate hinged together at their adjacent edges, and having remote edges hinged to said front and forward walls, respectively, characterized in that one of said side walls is secured to said front wall by a separable hinge, said front wall containing, between said opening therein and the hinge of the other of said side walls, a securing member for securing the edge of said one side wall such that said one side wall may be detached at said separable hinge and secured to said securing means so that said beam of light may be projected through said opening to a viewing surface remote from said projector, said hinge of front and rear plates of each side wall being spring loaded to urge said front and rear plates to a 180* relationship when said screen assembly is open, said forward wall including locating members which extend upwardly from the top edge of said front wall at opposite ends thereof, said hood containing positioning means adjacent the edge opposite the hinged edge thereof for engaging said locating members when said screen assembly is open.
Claim 7
Dependent Claim
315 words
A collapsible screen assembly for a self-contained projector of the type comprising a carrying case having a hood hinged adjacent an upper edge thereof and pivotable through about 90* from a closed position parallel to a front wall of said case to an open position substantially normal to said front wall, said case containing an optical system arranged to project a beam of light, through an opening in said front wall onto a translucent viewing screen mounted on a forward wall which is connected to said front wall by a pair of collapsible side walls that permit said forward wall to be moved from a position adjacent and parallel to said front wall to an extended position remote from but still parallel to said front wall, said side walls each comprising a front plate hinged together at their adjacent edges, and having remote edges hinged to said front and forward walls, respectively, characterized in that one of said side walls is secured to said front wall by a separable hinge, said front wall containing, between said opening therein and the hinge of the other of said side walls, a securing member for securing the edge of said one side wall such that said one side wall may be detached at said separable hinge and secured to said securing means so that said beam of light may be projected through said opening to a viewing surface remote from said projector, said hinge of front and rear plates of each side wall being spring loaded to urge said front and rear plates to a 180* relationship when said screen assembly is open, said forward wall including locating members which extend upwardly from the top edge of said front wall at opposite ends thereof, said hood containing positioning means adjacent the edge opposite the hinged edge thereof for engaging said locating members when said screen assembly is open.
Claim 8
Dependent Claim
44 words
The screen assembly of claim 5 wherein said forward plates of said side walls each include a pair of rearwardly extending fingers arranged to prevent the outer surfaces of each pair of forward and rear plates from being angularly related by greater than 180*.
Claim 9
Dependent Claim
57 words
The screen assembly of claim 5 wherein said hood includes at its lowermost edge, a bracket which is arranged to receive said locating posts as it rests on the top edge of said screen assembly, said hood also including a peripheral flange which is arranged to prevent light from entering said screen assembly through the top thereof.
Claim 10
Dependent Claim
47 words
The screen assembly of claim 5 wherein said forward plate of each of said side walls is wider than said rear plate thereof, and wherein said forward wall is wider than the spacing of said points of pivotal securement of said side walls on said front wall.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |