Patent US3572231A successfully refreshed from Google Patents.
US3572231A
Expired / Lapsed
US
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Delayed action device for focal plane shutter camera
Assignee: Eastman Kodak Co
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Filing: 1968-07-25
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Granted: 1971-03-23
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Expires: 1988-07-25
Abstract
Abstract A PHOTOGRAPHIC CAMERAS HAS A LOCKING MECHANISM TO PREVENT THE SECOND CURTAIN OF A DELAYED ACTION TWOCURTAIN SHUTTER FROM RETURNING TO ITS INOPERATIVE POSITION UNTIL ACTUATION OF THE FIRST CURTAIN SHUTTER IS COMPLETED. THE LOCKING MECHANISM IS RELEASED BY A GEAR MEMBER OPERATING WITH THE FIRST SHUTTER CURTAIN.
Inventors
- 👤 Wolfgang Ort
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:54
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/64
Claims Analysis
Total Claims: 0
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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) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |