US3311037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure plate assembly for cameras
Assignee: Agfa Gevaert NV
•
Filing: 1964-12-18
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Granted: 1967-03-28
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Expires: 1984-12-18
Abstract
No abstract record available.
Inventors
- 👤 Winkler Alfred
- 👤 Engelsmann Dieter
- 👤 Zobel Siegfried
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:48
CPC Classifications
G; G03; G03B; G03B1/00; G03B1/42; G03B1/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
IN A CAMERA, IN COMBINATION, A REAR WALL HAVING AN INNER SURFACE; LEAF SPRING MEANS LOCATED NEXT TO SAID INNER SURFACE OF SAID REAR WALL, SAID LEAF SPRING MEANS HAVING A CONCAVE SURFACE DIRECTED TOWARD SAID INNNER SURFACE OF SAID REAR WALL AND HAVING A PAIR OF OPPOSED ENDS ENGAGING SAID INNER SURFACE OF SAID REAR WALL, AND SAID LEAF SPRING MEANS HAVING A PAIR OF ARMS SPACED IN THE DIRECTION OF FILM MOVEMENT IN SAID CAMERA AND TENDING TO MOVE AWAY FROM SAID REAR WALL; AND A PRESSURE PLATE LOCATED IN FRONT OF AND ADJACENT TO SAID LEAF SPRING MEANS SO THAT THE LATTER IS SITUATED BETWEEN SAID PRESSURE PLATE AND SAID REAR WALL, SAID ARMS ENGAGING SAID PRESSURE PLATE AT PORTIONS THEREOF SPACED FROM EACH OTHER IN SAID DIRECTION OF FILM MOVEMENT AND AT A SURFACE THEREOF WHICH IS DIRECTED TOWARD SAID REAR WALL FOR URGING SAID PRESSURE PLATE AWAY FROM SAID REAR WALL AND REDUCING THE TENDENCY OF SAID PRESSURE PLATE TO TILT RELATIVE TO SAID DIRECTION OF FILM MOVEMENT.
Claim 2
Dependent Claim
173 words
IN A CAMERA, IN COMBINATION, A REAR WALL HAVING AN INNER SURFACE; LEAF SPRING MEANS LOCATED NEXT TO SAID INNER SURFACE OF SAID REAR WALL, SAID LEAF SPRING MEANS HAVING A CONCAVE SURFACE DIRECTED TOWARD SAID INNNER SURFACE OF SAID REAR WALL AND HAVING A PAIR OF OPPOSED ENDS ENGAGING SAID INNER SURFACE OF SAID REAR WALL, AND SAID LEAF SPRING MEANS HAVING A PAIR OF ARMS SPACED IN THE DIRECTION OF FILM MOVEMENT IN SAID CAMERA AND TENDING TO MOVE AWAY FROM SAID REAR WALL; AND A PRESSURE PLATE LOCATED IN FRONT OF AND ADJACENT TO SAID LEAF SPRING MEANS SO THAT THE LATTER IS SITUATED BETWEEN SAID PRESSURE PLATE AND SAID REAR WALL, SAID ARMS ENGAGING SAID PRESSURE PLATE AT PORTIONS THEREOF SPACED FROM EACH OTHER IN SAID DIRECTION OF FILM MOVEMENT AND AT A SURFACE THEREOF WHICH IS DIRECTED TOWARD SAID REAR WALL FOR URGING SAID PRESSURE PLATE AWAY FROM SAID REAR WALL AND REDUCING THE TENDENCY OF SAID PRESSURE PLATE TO TILT RELATIVE TO SAID DIRECTION OF FILM MOVEMENT.
References Cited (Backward Citations)
US2186633A
Cited
US3103861A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-27 | 1970-09-26 | 1971-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-27 | 1974-09-26 | 1975-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-27 | 1978-09-26 | 1979-03-28 | $7700.00 | Window Closed / Lapsed |