US3187653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for regulating the exposure time in photographic cameras
Assignee: Hittech Prontor GmbH
•
Filing: 1962-07-30
•
Granted: 1965-06-08
•
Expires: 1982-07-30
Abstract
No abstract record available.
Inventors
- 👤 Waldemar T Rentscher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:21
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; G03B15/04; G03B15/0452; G03B9/00; G03B9/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A DEVICE FOR OPERATING THE SHUTTER OF A PHOTOGRAPHIC CAMERA HAVING A SHUTTER RELEASE MEMBER, MEANS FOR CONTROLLING SAID SHUTTER FOR B-EXPOSURES, AND AN ELECTRIC SWITCH OPERATED WHEN SAID SHUTTER IS OPEN, SAID DEVICE COMPRISINGD FIRST MEANS CONNECTED TO OPERATE SAID SHUTTER RELEASE MEMBER; A RESILIENTLY OPERATED DRIVING MECHANISM CONNECTED TO SAID FIRST MEANS TO OPERATE THE SAME; COCKING MEANS FOR SAID DRIVING MECHANISM; A RELEASE MEMBER TO PERMIT SAID DRIVING MECHANISM TO OPERATE SAID FIRST MEANS; A LOCKING MECHANISM TO HOLD SAID FIRST MEANS IN OPERATIVE POSITION; TIME CONTROL MEANS COMPRISING A CAM AND MEANS TO MOVE SAID CAM AT A CONTROLLED SPEED; A LEVER HOLDING SAID TIME CONTROL MECHANISM AGAINST OPERATION; A BATTERY AND CAPACITOR CIRCUIT; A SECOND SWITCH CONNECTED IN SERIES WITH SAID CIRCUIT AND OPERATED BY SAID COCKING MEANS TO PERMIT SAID CAPACITOR TO BE CHARGED FROM SAID BATTERY WHEN SAID DRIVING MECHANISM IS COCKED; ELECTROMAGNETIC MEANS CONNECTED TO SAID FIRST-NAMED
Claim 2
Independent Claim
155 words
A DEVICE FOR OPERATING THE SHUTTER OF A PHOTOGRAPHIC CAMERA HAVING A SHUTTER RELEASE MEMBER, MEANS FOR CONTROLLING SAID SHUTTER FOR B-EXPOSURES, AND AN ELECTRIC SWITCH OPERATED WHEN SAID SHUTTER IS OPEN, SAID DEVICE COMPRISINGD FIRST MEANS CONNECTED TO OPERATE SAID SHUTTER RELEASE MEMBER; A RESILIENTLY OPERATED DRIVING MECHANISM CONNECTED TO SAID FIRST MEANS TO OPERATE THE SAME; COCKING MEANS FOR SAID DRIVING MECHANISM; A RELEASE MEMBER TO PERMIT SAID DRIVING MECHANISM TO OPERATE SAID FIRST MEANS; A LOCKING MECHANISM TO HOLD SAID FIRST MEANS IN OPERATIVE POSITION; TIME CONTROL MEANS COMPRISING A CAM AND MEANS TO MOVE SAID CAM AT A CONTROLLED SPEED; A LEVER HOLDING SAID TIME CONTROL MECHANISM AGAINST OPERATION; A BATTERY AND CAPACITOR CIRCUIT; A SECOND SWITCH CONNECTED IN SERIES WITH SAID CIRCUIT AND OPERATED BY SAID COCKING MEANS TO PERMIT SAID CAPACITOR TO BE CHARGED FROM SAID BATTERY WHEN SAID DRIVING MECHANISM IS COCKED; ELECTROMAGNETIC MEANS CONNECTED TO SAID FIRST-NAMED
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) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |