Film cassette
US4913368A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 14, 1989 |
| Grant date | Apr 3, 1990 |
| Priority date | — |
| Expiry date | Jul 14, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/30
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A film cassette is disclosed wherein a filmstrip in roll form is stored within the cassette shell and has a leader portion that projects from an exterior end of a film passage slit in the cassette shell to permit the filmstrip to be drawn out of the shell. According to the invention, a tow bar is secured to the leader portion. The tow bar normally is positioned in covering relation with the exterior end of the film passage slit to prevent the leader portion from being moved into the cassette shell and includes an engageable portion which may be engaged in a camera, for example, to separate the tow bar from the cassette shell to draw the filmstrip out of the shell for exposure purposes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.