Release blocking device for photographic cameras
Abstract
Abstract A RELEASE BLOCKING DEVICE FOR PHOTOGRAPHIC CAMERAS OR THE LIKE, IN WHICH A PHOTOGRAPHIC FILM STRIP, PERFORATED AT PREDETERMINED INTERVALS, IS ADVANCED STEPWISE ALONG A PREDETERMINED PATH. A SCANNING MEMBER IS ARRANGED TO ENGAGE AND DISENGAGE SUCCESSIVE PERFORATIONS ON THE PHOTOGRAPHIC FILM. AT OR DURING SHUTTER ACTUATION, THE SCANNING MEMBER BECOMES DISENGAGED FROM A PERFORATION, THUS PERMITTING FILM TRANSPORT TO TAKE PLACE. AT THE SAME TIME, THE SCANNING MEMBER RELEASES A CATCH MEMBER FOR MOVEMENT TO A POSITION IN WHICH IT HOLDS THE SHUTTER RELEASE IN A LOCKED POSITION. NEAR THE END OF FILM TRANSPORT, THE SCANNING MEMBER IS RELEASED TOWARD THE FILM WHEREUPON, WHEN IT SNAPS INTO A SUCCEEDING PERFORATION, THE CATCH MEMBER IS DEACTIVATED TO UNLOCK THE SHUTTER RELEASE.
Inventors
- 👤 Helmut Ettischer
- 👤 Kreis Esslingen
- 👤 Alfred Trumpp
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |