US3276344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Delayed-action release mechanism
Assignee: Hittech Prontor GmbH
•
Filing: 1964-12-04
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Granted: 1966-10-04
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Expires: 1984-12-04
Abstract
No abstract record available.
Inventors
- 👤 Waldemar T Rentschler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:59
CPC Classifications
G; G04; G04F; G04F3/00; G04F3/02; G04F3/025; G03; G03B; G03B9/00; G03B9/58; Y; Y10; Y10T; Y10T74/00; Y10T74/11; Y10T74/114
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A DELAYED-ACTION RELEASE MECHANISM FOR PHOTOGRAPHIC SHUTTERS, SAID MECHANISM COMPRISING: AN ACTUATOR CONNECTABLE TO A SHUTTER RELEASE; A DRIVING SPRING; FIRST MEANS DRIVINGLY CONNECTING SAID SPRING TO SAID ACTUATOR TO OPERATE SAID ACTUATOR FROM SAID SPRING; A FIRST GEAR CONNECTED TO SAID SPRING TO BE DRIVEN THEREBY; A DRIVEN SHAFT; SECOND MEANS FOR LIMITING THE INITIAL SPEED OF SAID FIRST MEANS, SAID SECOND MEANS COMPRISING AT LEAST ONE ELEMENT CONNECTED BETWEEN SAID GEAR AND SAID DRIVEN SHAFT TO TRANSMIT FORCE FROM SAID SPRING TO SAID SHAFT AND CAPABLE OF BEING UNCOUPLED; AND A CONTROL DEVICE ARRANGED TO BE MANUAALLY CONVEYED INTO DIFFERENT SETTING POSITIONS AND COMPRISING AN ACTUATING MEMBER DRIVINGLY CONNECTED TO SAID SPRING AND CONNECTED TO SAID ELEMENT TO UNCOUPLE THE SAME AFTER A SPECIFIC RUNNING DOWN IN RESPONSE TO THE RESPECTIVE SETTING POSITION OF SAID CONTROL DEVICE, TO PERMIT SAID SPRING TO DRIVE SAID ACTUATOR FASTER WHEN SAID ELEMENT BECOMES UNCOUPLED.
Claim 2
Dependent Claim
153 words
A DELAYED-ACTION RELEASE MECHANISM FOR PHOTOGRAPHIC SHUTTERS, SAID MECHANISM COMPRISING: AN ACTUATOR CONNECTABLE TO A SHUTTER RELEASE; A DRIVING SPRING; FIRST MEANS DRIVINGLY CONNECTING SAID SPRING TO SAID ACTUATOR TO OPERATE SAID ACTUATOR FROM SAID SPRING; A FIRST GEAR CONNECTED TO SAID SPRING TO BE DRIVEN THEREBY; A DRIVEN SHAFT; SECOND MEANS FOR LIMITING THE INITIAL SPEED OF SAID FIRST MEANS, SAID SECOND MEANS COMPRISING AT LEAST ONE ELEMENT CONNECTED BETWEEN SAID GEAR AND SAID DRIVEN SHAFT TO TRANSMIT FORCE FROM SAID SPRING TO SAID SHAFT AND CAPABLE OF BEING UNCOUPLED; AND A CONTROL DEVICE ARRANGED TO BE MANUAALLY CONVEYED INTO DIFFERENT SETTING POSITIONS AND COMPRISING AN ACTUATING MEMBER DRIVINGLY CONNECTED TO SAID SPRING AND CONNECTED TO SAID ELEMENT TO UNCOUPLE THE SAME AFTER A SPECIFIC RUNNING DOWN IN RESPONSE TO THE RESPECTIVE SETTING POSITION OF SAID CONTROL DEVICE, TO PERMIT SAID SPRING TO DRIVE SAID ACTUATOR FASTER WHEN SAID ELEMENT BECOMES UNCOUPLED.
References Cited (Backward Citations)
US1543741A
Cited
US3154951A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |