Camera using interference between exposure actuator and metering

Details Camera using interference between exposure actuator and metering Camera using interference between exposure actuator and metering

1995-11-30

1997-04-01

Blankenship, Howard B.

Photography

With film drive

Film transport cocks shutter

396418, G03B 118

Patent

active

056171641

ABSTRACT:
A photographic camera including a metering linkage and an exposure initiation member provided with extensions that interact to: a) block the linkage from energizing a film winding motor in one position of the member; and, b) release the linkage to energize the motor in another position of the member. The first or blocking position corresponds to depression of the member to initiate an exposure. The second or releasing position corresponds to the return of the member to its undepressed condition after initiating the exposure. The exposure initiation member includes a first tab and the metering linkage includes a second tab. In the depressed position of the member, the first and second tabs respectively engage each other, blocking movement of the linkage and thereby preventing energization of the motor. In the non-depressed position of the member, the first and second tabs respectively clear each other, releasing the linkage and energizing the motor. The motor then advances the film and resets the metering linkage. Resetting the linkage deenergizes the motor and interrupts the film advance at the completion of the metering cycle.

REFERENCES:
patent: 3568584 (1971-03-01), Harvey
patent: 3779145 (1973-12-01), Ettischer et al.
patent: 4075644 (1978-02-01), Hosono
patent: 4903061 (1990-02-01), Harvey
patent: 5008692 (1991-04-01), Diehl et al.
patent: 5023640 (1991-06-01), Diehl
patent: 5138350 (1992-08-01), Cocca
patent: 5235366 (1993-08-01), Kucmerowski

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