Shutter for camera

Details Shutter for camera Shutter for camera

1994-12-28

1997-02-11

Metjahic, Safet

Photography

Camera detail

Diaphragm shutter unit

396463, 396493, 396495, 396246, G03B 908, G03B 910

Patent

active

056026102

ABSTRACT:
When a driving member is rotated counterclockwise by a single motor with a pair of sectors biased in the closing direction by a biasing spring, a first driving pin causes an operating lever to rotate clockwise. The pair of sectors pivot in opposite directions to each other in association with the driving lever to reach a first position where the sectors are fully open without overlapping the lens opening. When the driving member is rotated clockwise, a second driving pin also causes the operating lever to rotate clockwise. The pair of sectors pivot in opposite directions to each other to reach a second position, that is, a half-open position where an opening smaller than the lens opening is obtained. At this time, The second driving pin abuts on a part of one sector to restrain the displacement of the driving member. Accordingly, the driving member is prevented from overrunning, and no hunting occurs.

REFERENCES:
patent: 4527876 (1985-07-01), Tanaka et al.
patent: 4791442 (1988-12-01), Touma et al.
patent: 4797700 (1989-01-01), Tsuji et al.
patent: 4987435 (1991-01-01), Touma et al.
patent: 5155522 (1992-10-01), Castor et al.
patent: 5159382 (1992-10-01), Lee et al.
patent: 5255037 (1993-10-01), Kobayashi
patent: 5258797 (1993-11-01), Oyoshi et al.

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