Film cassette
US5893001A · kind A · utility
0Cited by
8References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1996 |
| Grant date | Apr 6, 1999 |
| Priority date | — |
| Expiry date | Nov 6, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/30
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A film cassette having perforated film for permitting automated extension of the film, the film cassette comprises a core having the film convolutedly wound on the core. A rotatable drum receives the core, and includes a recessed slot and a projection which engages a perforation of the film for permitting motion of the film as the drum is rotated. A shell receives the drum, and includes an opening and a finger that matingly engages the recessed slot of the drum for forcing the film through the opening of the shell and, consequently, out of the film cassette.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.