Motion picture camera
Abstract
Abstract A MOTION PICTURE CAMERA WHEREIN THE SHUTTER IS DRIVEN BY AN ELECTRIC MOTOR WHICH IS STARTED IN RESPONSE TO DEPRESSION OF A PUSHBUTTON AND CONTINUES TO DRIVE THE SHUTTER ON RELEASE OF THE PUSHBUTTON UNTIL THE SHUTTER ASSUMES ITS CLOSED POSITION. THE MOTOR CIRCUIT INCLUDES A DISCONNECTING SWITCH WHICH IS CLOSED BY THE PUSHBUTTON AND OPENS ONLY ON RELEASE OF THE PUSHBUTTON AND UPON COMPLETED ROTATION OF THE SHUTTER TO ITS CLOSED POSITION. ONE OR MORE ARRESTING SWITCHES IN THE MOTOR CIRCUIT CAN BE OPENED INDEPENDENTLY OF THE PUSHBUTTON TO AUTOMATICALLY ARREST THE MOTOR BUT ONLY WHEN THE SHUTTER ASSUMES ITS CLOSED POSITION. THIS IS ACHIEVED BY THE PROVISION OF A CONTROL SWITCH WHICH BYPASSES THE ARRESTING SWITCHES AND IS CLOSED ON RELEASE OF THE PUSHBUTTON TO THUS COMPLETE THE MOTOR CIRCUIT UNTIL THE DISCONNECTING SWITCH OPENS.
Inventors
- 👤 Theo Wilharm
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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |