Electromagnetic release shutter

Details Electromagnetic release shutter Electromagnetic release shutter

1981-07-01

1982-12-21

Griffin, Donald A.

354246, G03B 908, G03B 940

Patent

active

043646549

ABSTRACT:
In a shutter of the electromagnetic release type arranged to have shutter blades locked by locking members in their charged states and to make an exposure by releasing the shutter blades from the locking members, a first locking member is arranged to lock each of the charged shutter blades while a second locking member is arranged to lock the shutter blade when the shutter blade is released from the first locking member and to have the shutter blade released therefrom by the action of an electromagnet. The releasing torque required for the second locking member is smaller than that of the first locking member.

REFERENCES:
patent: 3946414 (1976-03-01), Kitai
patent: 3950772 (1976-04-01), Nakagawa et al.
patent: 3999196 (1976-12-01), Inoue
patent: 4110772 (1978-08-01), Nakagawa et al.

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