US3109357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Focal-plane photographic shutter
Assignee: La Spirotechnique Industrielle et Commerciale
•
Filing: 1961-07-20
•
Granted: 1963-11-05
•
Expires: 1981-07-20
Abstract
No abstract record available.
Inventors
- 👤 Jean Guy Marie Joseph De W Oli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:33
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/08; G03B9/36; G03B9/40; G03B9/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A FOCAL-PLANE SHUTTER OF THE TYPE COMPRISING TWO LATERALLY GUIDED RIGID BLADES, SAID SHUTTER COMPRISING, IN ASSOCIATION WITH EACH BLADE, RESPECTIVELY, A LATERAL GUIDE YOKE HAVING AN UPPER AND A LOWER EYELET BOTH ENGAGED SLIDABLY ON A STATIONARY GUIDE ROD, A BLADE-DRIVING COIL SPRING WOUND ABOUT SAID GUIDE ROD AND COMPRESSIBLE BETWEEN SAID UPPER EYELET AND A BUSHING SLIDABLE ON SAID GUIDE ROD, COCKING AND TRIGGERING MEANS COACTING WITH SAID YOKE FOR RESPECTIVELY COMPRESSING AND RELEASING SAID BLADE-DRIVING SPRING, AND A DAMPING MEMBER FRICTIONALLY SLIDABLE ON SAID GUIDE ROD BETWEEN SAID BUSHING AND SAID LOWER EYELET.
Claim 2
Dependent Claim
96 words
A FOCAL-PLANE SHUTTER OF THE TYPE COMPRISING TWO LATERALLY GUIDED RIGID BLADES, SAID SHUTTER COMPRISING, IN ASSOCIATION WITH EACH BLADE, RESPECTIVELY, A LATERAL GUIDE YOKE HAVING AN UPPER AND A LOWER EYELET BOTH ENGAGED SLIDABLY ON A STATIONARY GUIDE ROD, A BLADE-DRIVING COIL SPRING WOUND ABOUT SAID GUIDE ROD AND COMPRESSIBLE BETWEEN SAID UPPER EYELET AND A BUSHING SLIDABLE ON SAID GUIDE ROD, COCKING AND TRIGGERING MEANS COACTING WITH SAID YOKE FOR RESPECTIVELY COMPRESSING AND RELEASING SAID BLADE-DRIVING SPRING, AND A DAMPING MEMBER FRICTIONALLY SLIDABLE ON SAID GUIDE ROD BETWEEN SAID BUSHING AND SAID LOWER EYELET.
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) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |