Closing light lock of film cassette turns off film-wind-into-cassette motor, in one-time-use camera
US5815754A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 1997 |
| Grant date | Sep 29, 1998 |
| Priority date | — |
| Expiry date | May 14, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B1/18
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A camera for use with a film cassette having a spool rotatable to wind an exposed filmstrip including a trailing film end portion into the cassette and a light lock movable to be closed after the trailing film end portion is wound into the cassette, comprising a film winder rotatable in engagement with the spool in a film winding direction to rotate the spool in the same direction to wind the exposed filmstrip including the trailing film end portion into the cassette, and a closing actuator movable in engagement with the light lock to close the light lock, is characterized in that a drive motor is drivingly connected with the film winder to rotate the film winder in the film winding direction, and a motor switch capable of changing state to turn off the drive motor is disposed to change state to turn off the drive motor when the closing actuator is moved to close the light lock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.