Film advance mechanism for camera
US5794089A · kind A · utility
2Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 2, 1997 |
| Grant date | Aug 11, 1998 |
| Priority date | — |
| Expiry date | Apr 2, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B1/08
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A camera comprises a slide manually movable in a forward direction and in a reverse direction; a spool drive member adapted to be connected to a film spool for driving rotation in a winding direction to windingly rotate the film spool to wind an exposed film onto the film spool; and a two-way coupling between the slide and the spool drive member to drivingly rotate the spool drive member in the winding direction in order to windingly rotate the film spool when the slide is manually moved in the forward and reverse directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.