Power-operated actuator for a film advance mechanism of a camera
US4030111A · kind A · utility
4Cited by
4References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 4, 1975 |
| Grant date | Jun 14, 1977 |
| Priority date | — |
| Expiry date | Nov 4, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B1/12
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A power-operated actuator for a film advance mechanism of a camera has a motor for operating the mechanism, the actuator being constructed such that the motor starts free of the load represented by the mechanism, and being constructed such that the mechanism can be operated manually without the actuator imposing a significant load. Means may be provided for preventing jamming of the actuator should the motor be energized accidentally during manual operation of the film advance mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.