One-time-use camera with film sensor to determine when to close cassette disabled when cassette closed
US6014520A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 3, 1999 |
| Grant date | Jan 11, 2000 |
| Priority date | — |
| Expiry date | Feb 3, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2219/045
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A one-time-use camera comprising a film cassette which has a filmstrip that is to be progressively wind into the cassette following each exposure and a light lock that is to be closed after the filmstrip is completely wound into the cassette, and a single-piece closing unit for closing the light lock which has a film sensing portion in contact with the filmstrip as the filmstrip is progressively wound into the cassette to determine when the filmstrip is completely wound into the cassette and a closing portion movable to close the light lock when the film sensing portion determines that the filmstrip is completely would into the cassette, is characterized in that a fixed stop is arranged opposite the cassette to form a capture space for the film sensing portion between the fixed stop and the cassette, the film sensing portion is connected to the closing portion at an intermediate weakened portion that is constructed to allow the film sensing portion to be folded towards the closing portion without becoming separated from the closing portion, and the single-piece closing unit is supported for pivotal movement to pivot the closing portion to close the light lock and to pivot the film …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.