Patent US2994341A successfully refreshed from Google Patents.
Patent US4556283A successfully refreshed from Google Patents.
US4556283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic viewing screen
Assignee: Sony Corp
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Filing: 1983-01-11
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Granted: 1985-12-03
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Expires: 2003-01-11
Abstract
Abstract An automatic screen for projecting an image from a video projector onto it is disclosed. It has a cabinet 1 which accommodates a screen 2. The screen 2 can be moved relative to the cabinet by a chain 5a coupling a front door 1a of the cabinet 1 and a sprocket. The front door 1a of the cabinet 1 is opened in an interlocked relation to the operation of bringing the screen 2 to a set position projected from the cabinet 1. When the screen 2 is no longer used, it can be brought back into the cabinet 1, and in an interlocked relation to this motion the front door 1a of the cabinet 1 is closed.
Inventors
- 👤 Kiyoshi Numata
- 👤 Toshihiro Yoshida
- 👤 Takashi Kokubo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:28
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/54; G03B21/56; G03B21/58; B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/368
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
76 words
A disappearing viewing mechanism comprising an upright viewing screen, a cabinet enclosing said screen, an opening in an upper portion of said cabinet, a closure for said opening, conveyor means operating to convey said upright screen upwardly of said cabinet and into view above said cabinet and said opening, and means interconnecting said closure and said screen simultaneously moving said closure into open condition and said screen into its upper viewing position, or the reverse thereof.
Claim 2
Dependent Claim
76 words
A disappearing viewing mechanism comprising an upright viewing screen, a cabinet enclosing said screen, an opening in an upper portion of said cabinet, a closure for said opening, conveyor means operating to convey said upright screen upwardly of said cabinet and into view above said cabinet and said opening, and means interconnecting said closure and said screen simultaneously moving said closure into open condition and said screen into its upper viewing position, or the reverse thereof.
Claim 3
Dependent Claim
14 words
The structure of claim 1 wherein said interconnecting means comprises a reversible drive conveyor.
Claim 4
Dependent Claim
15 words
The structure of claim 2 wherein said closure substantially counterbalances said screen in conveyor operation.
Claim 5
Dependent Claim
25 words
The structure of claims 1, 2 or 3 wherein said closure is in the front wall of the cabinet adjacent to the uppermost edge thereof.
Claim 6
Dependent Claim
25 words
The structure of claim 4 including a pivoted top portion on said cabinet permitting said screen to project at least in part through said top.
Claim 7
Dependent Claim
18 words
The structure of claim 4 wherein said screen is conveyed into a tilted position in its uppermost position.
References Cited (Backward Citations)
US2812808A
Cited
US4351592A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-02 | 1989-06-03 | 1989-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-02 | 1993-06-03 | 1993-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-02 | 1997-06-03 | 1997-12-03 | $7700.00 | Window Closed / Lapsed |