Patent
1976-01-13
1977-08-02
Gonzales, John
354230, 354235, 354247, 354268, G03B 118, G03B 908
Patent
active
040400727
ABSTRACT:
This invention relates to a photographic camera having an automatic shutter latch mechanism which may be released in response to initial shutter blade movement resulting from energization of the shutter drive means and which may thereafter be moved into position to accommodate relatching of the shutter blades in response to film advancement. The automatic shutter latch mechanism is also responsive to initial shutter blade movement resulting from manually actuated energization of the electrical shutter drive means for actuating a power interlock switch to maintain the electrical energization of a photographic exposure control system after manual deactuation by the user. In addition, the shutter latch mechanism includes a shock stabilizing arrangement to inhibit the accidental unlatching of the shutter blade mechanism resulting from shutter blade movement occassioned through extraneous vibrations, sudden shock or otherwise and not through actuation of the shutter drive means.
REFERENCES:
patent: 3358572 (1967-12-01), Steisslinger
patent: 3362311 (1968-01-01), Singer
patent: 3533346 (1970-10-01), Erlichman et al.
patent: 3903538 (1975-09-01), Yoshizaki
patent: 3969739 (1976-07-01), Johnson et al.
patent: 3972057 (1976-07-01), Whiteside
Johnson Bruce K.
Whiteside George D.
Gonzales John
Polaroid Corporation
Roman Edward S.
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