1974-11-12
1976-05-11
Braun, Fred L.
G03B 1700
Patent
active
039567621
ABSTRACT:
A shutter dial releasable locking device for photographic cameras, includes a stationary circular guide member having a number of radially directed stepped portions, a stop member carried by the shutter dial and movable along the circumference of the guide member and biased to engage a stepped portion of the guide member, and a release member biased to project outwardly through a circumferential wall of the shutter dial and adapted to move the stop member in a radial direction of the shutter dial when pressed against a force which biases the release member. When the shutter dial is set in an automatic exposure control position, at a highest shutter speed of manual exposure control or in a mechanical exposure control position, the stop member engages a corresponding stepped portion of the guide member to hold the shutter dial in a position of the selected mode of shutter control.
REFERENCES:
patent: 3505942 (1970-04-01), Ort
patent: 3648581 (1972-03-01), Umemura
patent: 3742824 (1973-07-01), Ueda et al.
Braun Fred L.
Minolta Camera Kabushiki Kaisha
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