Patent US3285152A successfully refreshed from Google Patents.
US3285152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic shutter
Assignee: Compur Werk GmbH and Co
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Filing: 1964-07-09
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Granted: 1966-11-15
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Expires: 1984-07-09
Abstract
No abstract record available.
Inventors
- 👤 Fahlenberg Paul
- 👤 Lang Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:15
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A PHOTOGRAPHIC SHUTTER INCLUDING A RETARDING TRAIN OF ROTARY MEMBERS SUCCESSIVELY DRIVING EACH OTHER, CHARACTERIZED BY THE FACT THAT TWO SUCCESSIVE MEMBERS OF SAID RETARDING TRAIN ARE IN THE FORM OF CAM PLATES IN DRIVING CONTACT WITH EACH OTHER AT THEIR PERIPHERIES, THE PERIPHERAL PITCH OF EACH OF SAID CAM PLATES INCREASING AND DECREASING SMOOTHLY AND CONTINUOUSLY, THE ROTARY AXES OF THE TWO CAM PLATES BEING AT A VARIABLE AXIAL SPACING FROM EACH OTHER.
Claim 2
Dependent Claim
74 words
A PHOTOGRAPHIC SHUTTER INCLUDING A RETARDING TRAIN OF ROTARY MEMBERS SUCCESSIVELY DRIVING EACH OTHER, CHARACTERIZED BY THE FACT THAT TWO SUCCESSIVE MEMBERS OF SAID RETARDING TRAIN ARE IN THE FORM OF CAM PLATES IN DRIVING CONTACT WITH EACH OTHER AT THEIR PERIPHERIES, THE PERIPHERAL PITCH OF EACH OF SAID CAM PLATES INCREASING AND DECREASING SMOOTHLY AND CONTINUOUSLY, THE ROTARY AXES OF THE TWO CAM PLATES BEING AT A VARIABLE AXIAL SPACING FROM EACH OTHER.
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) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |