Film winding device
US4443084A · kind A · utility
7Cited by
1References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 15, 1981 |
| Grant date | Apr 17, 1984 |
| Priority date | — |
| Expiry date | Oct 15, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/425
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention is directed to an arrangement controlling the film winding mechanism of a camera. In particular, the take-up amount of the film is monitored, and if the take-up amount of the film does not fall within the prescribed amount of film within a prescribed period of time, this is detected and a control circuit is actuated to stop the film-winding operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.