Photographic camera with a release locking device

Details Photographic camera with a release locking device Photographic camera with a release locking device

1979-04-02

1981-02-10

Gellner, Michael L.

354 60R, G03B 7083, G03B 1738

Patent

active

042498163

ABSTRACT:
A release locking device for use in photographic cameras of the type in which an exposure meter and electro-magnetic actuating and releasing means for automatic exposure control are rendered operative in separate manner by their respective control or release switches as may be operatively associated with a display button and a shutter release button respectively. This device comprises a master switch connected between an electrical power source and a common input lead of these release switches to be closed and opened in response to an actuation and a release, respectively, of a manually operable member, thereby all of the release switches are rendered effective and ineffective at a time. In a preferred embodiment, this device is operatively associated with a shutter cocking mechanism to be actuable in automatic response to a protracting movement of the shutter cocking lever into an effective range of shutter cocking operation.

REFERENCES:
patent: 3367251 (1968-02-01), Furuta
patent: 3693524 (1972-09-01), Furuta
patent: 3964075 (1976-06-01), Ohtaki et al.
patent: 4003063 (1977-01-01), Takahashi et al.

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