Metered film holding device to prevent film movement in camera
US5603069A · kind A · utility
1Cited by
8References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 4, 1996 |
| Grant date | Feb 11, 1997 |
| Priority date | — |
| Expiry date | Mar 4, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B1/62
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A metered film holding device in a camera comprising a metered film holding element supported to enter a film perforation in a metered filmstrip to substantially prevent unintended movement of the filmstrip, is characterized in that the metered film holding element is a ball supported to roll in place continuously in contact with the filmstrip when the filmstrip is advanced in the camera. The ball has a diameter greater than a maximum dimension of the film perforation in order to be able to roll only partly into the film perforation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.