Patent US3704054A successfully refreshed from Google Patents.
US3704054A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Folding mirror and screen assembly
Assignee: Vantiva SA
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Filing: 1971-05-14
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Granted: 1972-11-28
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Expires: 1991-05-14
Abstract
Abstract A folding mirror and screen assembly for use with projectors, viewers, or the like is disclosed which includes a mirror unit and screen pivotally mounted on a base means and a support arm pivotally connected to the mirror unit. Latch means are provided on the base means to latch the support arm in upright position when the assembly is in its viewing position. Means are also included to release the latch means so that the assembly may be folded into the closed position.
Inventors
- 👤 Edward Robak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:54
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/14; G03B21/30
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
96 words
A folding mirror and screen assembly for projectors and the like comprising a base means, a mirror unit pivotally mounted on said base means, a screen pivotally connected to said mirror unit and to said base means, a support arm pivotally connected to said mirror unit in operative position adjacent the surface of said base means, latch means mounted on said base means to latch said support arm in upright position when said assembly is in the viewing position, and means to release said latch means, whereby said assembly may be folded into its closed position.
Claim 2
Dependent Claim
96 words
A folding mirror and screen assembly for projectors and the like comprising a base means, a mirror unit pivotally mounted on said base means, a screen pivotally connected to said mirror unit and to said base means, a support arm pivotally connected to said mirror unit in operative position adjacent the surface of said base means, latch means mounted on said base means to latch said support arm in upright position when said assembly is in the viewing position, and means to release said latch means, whereby said assembly may be folded into its closed position.
Claim 3
Dependent Claim
33 words
The mirror and screen assembly of claim 1 in which said assembly is retained within a case and includes means connecting said mirror unit to the interior of the housing of said case.
Claim 4
Dependent Claim
29 words
The assembly of claim 2 in which stop means are mounted on said base means to prevent over-travel of said support arm across the surface of said base means.
Claim 5
Dependent Claim
68 words
The assembly of claim 2 in which said release means include lift springs mounted on said base means adapted to have contact with said support arm when said assembly is in the viewing position, and a release arm mounted on said base means adjacent said lift springs, whereby rotation of said release arm lifts said springs and support arm and releases said support arm from said latch means.
Claim 6
Dependent Claim
18 words
The assembly of claim 4 in which said release arm includes means to facilitate lifting said lift springs.
Claim 7
Dependent Claim
34 words
The assembly of claim 2 in which said latch means includes a recess in said base means and said support arm is retained in said recess when said assembly is in the viewing position.
Claim 8
Dependent Claim
48 words
The assembly of claim 6 in which stop means arE mounted on said base means to prevent over-travel of said support arm, and said recess extends outwardly from and decreases gradually in depth from said stop means to facilitate the release of said support arm from said recess.
Claim 9
Dependent Claim
15 words
The assembly of claim 2 including a light shield enclosing said screen and mirror unit.
Claim 10
Dependent Claim
29 words
The assembly of claim 2 including means mounted on said base means overlying said support arm to limit movement of the same across the surface of said base means.
Claim 11
Dependent Claim
218 words
A folding mirror and screen assembly for projectors or the like comprising a base means, a mirror unit pivotally connected to said base means, a screen pivotally connected to said mirror assembly and to said base means, a support arm pivotally connected to said mirror unit in operative position adjacent the surface of said base means, latch means mounted on said base means to latch said support arm in the upright position when said assembly is in the viewing position, said latch means including a recess in said base means in which said support arm fits when in the upright position, means to release said latch means, whereby said assembly may be folded into a closed position, said release means including lift springs mounted on said base means adapted to be in contact with the underside of said support arm when said assembly in the viewing position and a release arm mounted on said base means adjacent said lift springs adapted for rotatable movement about the surface of said base means, whereby rotation of said release arm lifts said springs and support arm and releases said support arm from said latch means, and said mirror and screen assembly retained within a case and including means connecting said mirror unit to the interior of the housing of said case.
Claim 12
Dependent Claim
218 words
A folding mirror and screen assembly for projectors or the like comprising a base means, a mirror unit pivotally connected to said base means, a screen pivotally connected to said mirror assembly and to said base means, a support arm pivotally connected to said mirror unit in operative position adjacent the surface of said base means, latch means mounted on said base means to latch said support arm in the upright position when said assembly is in the viewing position, said latch means including a recess in said base means in which said support arm fits when in the upright position, means to release said latch means, whereby said assembly may be folded into a closed position, said release means including lift springs mounted on said base means adapted to be in contact with the underside of said support arm when said assembly in the viewing position and a release arm mounted on said base means adjacent said lift springs adapted for rotatable movement about the surface of said base means, whereby rotation of said release arm lifts said springs and support arm and releases said support arm from said latch means, and said mirror and screen assembly retained within a case and including means connecting said mirror unit to the interior of the housing of said case.
Claim 13
Dependent Claim
46 words
The assembly of claim 10 in which said support arm is a continuous rod pivotally connected to said mirror unit at the sides thereof with a portion substantially centrally of the length thereof adjacent the surface of said base means to provide support for said assembly.
Claim 14
Dependent Claim
18 words
The assembly of claim 11 in which said release arm includes means to facilitate lifting said lift springs.
Claim 15
Dependent Claim
39 words
The assembly of claim 11 in which said release arm includes a handle extending through said base means at one side thereof to facilitate rotation of said release arm and release of said support arm from said latch means.
Claim 16
Dependent Claim
28 words
The assembly of claim 12 in which said release arm extends across said base means and is retained in a groove in the surface of said base means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-28 | 1976-05-29 | 1976-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-28 | 1980-05-29 | 1980-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-28 | 1984-05-29 | 1984-11-28 | $7700.00 | Window Closed / Lapsed |