Single-piece protective package for a film cassette
US5295578A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1993 |
| Grant date | Mar 22, 1994 |
| Priority date | — |
| Expiry date | Mar 31, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/30
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A single-piece protective package is intended for a film cassette provided with a substantially cylindrical housing having an extending pair of lips slightly spaced apart to define a film egress/ingress mouth and with a rotatable film spool for a coiled filmstrip inside the housing having a protruding end that protrudes at least to an outside end face of the housing to permit its engagement to rotate the film spool. The package comprises a mouth cap configured to fit over the extending pair of lips of the housing including the film egress/ingress mouth to seal the film egress/ingress mouth, but not to fit over a cylindrical portion of the housing to leave the cylindrical portion visible, and spool locking means integrally formed with the mouth cap for engaging the protruding end of the film spool to prevent rotation of the film spool when the mouth cap is fit over the extending pair of lips of the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.