Camera with manual film rewind locked when cassette closed, pref

Details Camera with manual film rewind locked when cassette closed, pref Camera with manual film rewind locked when cassette closed, pref

1996-01-24

1997-03-25

Metjahic, Safet

Photography

With film drive

Double exposure prevention

396285, G03B 110, G03B 1726

Patent

active

056149760

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, comprises a manual 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 locking means coupled with the light lock to prevent further rotation of the film winder in the film winding direction when the light lock is closed. Preferably, the cassette has an indicator flag rotatable coaxially with the spool to be positioned in an indicator window of the cassette to provide a visual film-exposed warning when the spool is at a predetermined angle of rotation, and the locking means secures the film winder at the same angle of rotation to position the indicator flag in the indicator window of the cassette when the light lock is closed.

REFERENCES:
patent: 3628432 (1971-12-01), Ettischer
patent: 4751536 (1988-06-01), Ohmura et al.
patent: 5079579 (1992-01-01), Pagano et al.
patent: 5231438 (1993-07-01), Smart
patent: 5357303 (1994-10-01), Wirt
patent: 5359378 (1994-10-01), Zander et al.
patent: 5384613 (1995-01-01), Cloutier et al.
patent: 5481325 (1996-01-01), Wada et al.
patent: 5495310 (1996-02-01), Takatori
patent: 5497212 (1996-03-01), Kawamura et al.
patent: 5506650 (1996-04-01), Stephenson, III et al.
patent: 5555063 (1996-09-01), Balling

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