Electromagnetically controlled shutter for camera

Details Electromagnetically controlled shutter for camera Electromagnetically controlled shutter for camera

1986-07-17

1987-06-09

Mathews, A. A.

354246, G03B 908, G03B 940

Patent

active

046716378

ABSTRACT:
A shutter for camera having a shutter controlling mechanism including an armature and an electromagnet in which starting of operation of a shutter-curtain is controlled by operation of separating the armature from the electromagnet, which includes an armature lever for actuating said armature and having a bearing rotatably mounted around a supporting shaft, an armature separating spring for applying a force to said armature lever to separate said armature from said electromagnet, said armature separating spring being arranged around a guide formed by the peripheral surface of said bearing, and a collar interposed between the armature separating spring and the peripheral surface of the bearing, said collar being made of molded plastic material having small friction to a metallic material.

REFERENCES:
patent: 4364654 (1982-12-01), Senuma et al.
patent: 4487492 (1984-12-01), Toyoda et al.

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