Patent US3087535A successfully refreshed from Google Patents.
US3087535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable projection screen
Assignee: Agfa Gevaert NV
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Filing: 1960-07-11
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Granted: 1963-04-30
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Expires: 1980-07-11
Abstract
No abstract record available.
Inventors
- 👤 Muller Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:31
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/54; G03B21/56; G03B21/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A PORTABLE PROJECTION SCREEN ASSEMBLY COMPRISING A VERTICAL COLUMN INCORPORATING STAND MEANS UPON ITS LOWER END, A PAIR OF ROLLERS ROTATABLY MOUTED AT THEIR ENDS ON A PAIR OF ELONGATED SUPPORT MEANS, SAID PAIR OF SUPPORT MEANS HAVING THEIR AXES DISPOSED PARALLEL TO EACH OTHER AND TO SAID COLUMN, A SCREEN WOUND UPON AND BETWEEN SAID ROLLERS, SAID ROLLERS BEING BIASED TO ROLL SAID SCREEN UP UPON MOVEMENT TOGETHER, LINKING MEANS CONNECTING SAID SUPPORT MEANS TO SAID COLUMN FOR MOVEMENT TOWARD AND AWAY FROM SAID COLUMN IN A MANNER WHICH MAINTAINS SAID PARALLEL DISPOSITION OF SAID ROLLERS THROUGHOUT THE RANGE OF MOVEMENT OF SAID ROLLERS FROM UNROLLED POSITIONS DISPLACED FROM EACH OTHER TO A ROLLED UP CONDITION IN WHICH THEY ARE DISPOSED ADJACENT SAID COLUMN, SAID LINKING MEANS INCLUDING SUPPORTING ARMS, PIVOT MEANS CONNECTING THE ENDS OF SAID ARMS TO SAID COLUMN AND TO SAID SUPPORT MEANS, BRACING RODS EXTENDING BETWEEN SAID COLUMN AND
Claim 2
Dependent Claim
154 words
A PORTABLE PROJECTION SCREEN ASSEMBLY COMPRISING A VERTICAL COLUMN INCORPORATING STAND MEANS UPON ITS LOWER END, A PAIR OF ROLLERS ROTATABLY MOUTED AT THEIR ENDS ON A PAIR OF ELONGATED SUPPORT MEANS, SAID PAIR OF SUPPORT MEANS HAVING THEIR AXES DISPOSED PARALLEL TO EACH OTHER AND TO SAID COLUMN, A SCREEN WOUND UPON AND BETWEEN SAID ROLLERS, SAID ROLLERS BEING BIASED TO ROLL SAID SCREEN UP UPON MOVEMENT TOGETHER, LINKING MEANS CONNECTING SAID SUPPORT MEANS TO SAID COLUMN FOR MOVEMENT TOWARD AND AWAY FROM SAID COLUMN IN A MANNER WHICH MAINTAINS SAID PARALLEL DISPOSITION OF SAID ROLLERS THROUGHOUT THE RANGE OF MOVEMENT OF SAID ROLLERS FROM UNROLLED POSITIONS DISPLACED FROM EACH OTHER TO A ROLLED UP CONDITION IN WHICH THEY ARE DISPOSED ADJACENT SAID COLUMN, SAID LINKING MEANS INCLUDING SUPPORTING ARMS, PIVOT MEANS CONNECTING THE ENDS OF SAID ARMS TO SAID COLUMN AND TO SAID SUPPORT MEANS, BRACING RODS EXTENDING BETWEEN SAID COLUMN AND
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) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |