Bi-stable mechanical photographic shutter

Details Bi-stable mechanical photographic shutter Bi-stable mechanical photographic shutter

2008-05-06

2008-05-06

Perkey, W. B. (Department: 2862)

Photography

Camera detail

Shutter

C396S467000

Reexamination Certificate

active

07367721

ABSTRACT:
An electromagnetically operable rotary shutter is rendered bi-stable by the use of two linear electric motors, one to open the shutter and a second to close the shutter together with a latch that holds the shutter in either an open or a closed position in the absence of power to purposefully open or close the shutter.

REFERENCES:
patent: 3470808 (1969-10-01), Bloemendaal et al.
patent: 3595553 (1971-07-01), Vincent
patent: 3664251 (1972-05-01), Vincent
patent: 6652165 (2003-11-01), Pasquarella

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