Electromagnetic shutter apparatus for camera

Details Electromagnetic shutter apparatus for camera Electromagnetic shutter apparatus for camera

1978-04-03

1979-10-16

Gellner, Michael L.

354268, G03B 738, G03B 1902

Patent

active

041711564

ABSTRACT:
An electromagnetic shutter apparatus for a camera includes a first and a second notched disc which are adapted to rotate in response to a film winding operation, a resilient member operatively connecting the notched discs, and a detent member capable of engaging with and disengaging from the second disc in response to a shutter operation. The detent member prevents an inadvertent operation from occurring during a film winding and a shutter release operation. The apparatus also comprises an unlocking member which unlocks a film winding mechanism in ganged relationship with a shutter drive member which is electromagnetically driven to open the shutter, and a constraining member which can be moved into engagement with the unlocking member in response to an external operation to thereby prevent the unlock operation, thus permitting a desired multiple exposure process.

REFERENCES:
patent: 4057814 (1977-11-01), Grunbacker et al.

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