Film cassette
US3995297A · kind A · utility
0Cited by
3References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 25, 1975 |
| Grant date | Nov 30, 1976 |
| Priority date | — |
| Expiry date | Aug 25, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/30
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The film cassette comprising the usual delivery chamber and take-up chamber for a film provided with a feed perforation and a bridge which connects the two chambers. A feed slot in said bridge extends in the travel direction of the film, a lateral edge of the feed slot having an offset in the end of the slot directed towards the take-up chamber. In this manner, the feed claw of the camera has to perform a lateral movement to effect unlocking of the shutter release mechanism or locking of a further cocking and film transport operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.