US3242838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic shutter
Assignee: Compur Werk GmbH and Co
•
Filing: 1963-10-14
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Granted: 1966-03-29
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Expires: 1983-10-14
Abstract
No abstract record available.
Inventors
- 👤 Singer Franz
- 👤 Euthum Bernhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:57
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
A PHOTOGRAPHIC SHUTTER COMPRISING A PLURALITY OF PIVOTED SHUTTER BLADES, A BLADE DRIVING RING OPERATIVELY CONNECTED TO SAID SHUTTER BLADES AND MOUNTED FOR RECIPROCATION TO OPEN AND CLOSE THE BLADES, A CRANK OPERATIVELY CONNECTED TO SAID BLADE DRIVING RING AND ADAPTED TO RECIPROCATE SAID RING, AND AN OPENING MEMBER PIVOTALLY MOUNTED FOR MOVEMENT BETWEEN A REST POSITION AND AN OPERATIVE POSITION, SAID OPENING MEMBER INCLUDING A FIRST AND A SECOND ARM, WHEREBY IN THE REST POSITION OF SAID OPENING MEMBER THE FIRST ARM PARTLY LIES ALONG THE PATH OF THE MOVEMENT OF SAID CRANK TO PROVIDE AN ABUTMENT MAINTAINING SAID CRANK IN ENGAGEMENT WITH SAID DRIVING RING AT LEAST AT THE POINT OF REVERSAL MOVEMENT OF SAID CRANK AND SAID DRIVING RING, SAID SECOND ARM COMPRISING A DISENGAGING SURFACE COOPERATING WITH SAID CRANK AND ENGAGING SURFACE COOPERATING WITH SAID DRIVING RING, BOTH SURFACES ACTING DURING THE MOVEMENT OF THE OPENING MEMBER FROM THE REST POSITION TO THE OPERATING TO DISENGAGE SAID CRANK FOR ENGAGEMENT WITH SAID DRIVING RING, AND TO MOVE THE DRIVING RING TO THE OPEN POSITION OF THE SHUTTER BLADES.
Claim 2
Dependent Claim
182 words
A PHOTOGRAPHIC SHUTTER COMPRISING A PLURALITY OF PIVOTED SHUTTER BLADES, A BLADE DRIVING RING OPERATIVELY CONNECTED TO SAID SHUTTER BLADES AND MOUNTED FOR RECIPROCATION TO OPEN AND CLOSE THE BLADES, A CRANK OPERATIVELY CONNECTED TO SAID BLADE DRIVING RING AND ADAPTED TO RECIPROCATE SAID RING, AND AN OPENING MEMBER PIVOTALLY MOUNTED FOR MOVEMENT BETWEEN A REST POSITION AND AN OPERATIVE POSITION, SAID OPENING MEMBER INCLUDING A FIRST AND A SECOND ARM, WHEREBY IN THE REST POSITION OF SAID OPENING MEMBER THE FIRST ARM PARTLY LIES ALONG THE PATH OF THE MOVEMENT OF SAID CRANK TO PROVIDE AN ABUTMENT MAINTAINING SAID CRANK IN ENGAGEMENT WITH SAID DRIVING RING AT LEAST AT THE POINT OF REVERSAL MOVEMENT OF SAID CRANK AND SAID DRIVING RING, SAID SECOND ARM COMPRISING A DISENGAGING SURFACE COOPERATING WITH SAID CRANK AND ENGAGING SURFACE COOPERATING WITH SAID DRIVING RING, BOTH SURFACES ACTING DURING THE MOVEMENT OF THE OPENING MEMBER FROM THE REST POSITION TO THE OPERATING TO DISENGAGE SAID CRANK FOR ENGAGEMENT WITH SAID DRIVING RING, AND TO MOVE THE DRIVING RING TO THE OPEN POSITION OF THE SHUTTER BLADES.
References Cited (Backward Citations)
US2949075A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |