Focal plane shutter for digital still cameras

Photography – Camera detail – Shutter

Reexamination Certificate

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Details

C396S486000, C396S489000

Reexamination Certificate

active

10945114

ABSTRACT:
A drive member attached to the output shaft of a DC motor placed on a shutter base board includes a drive pin connected to the arm of a shutter blade within a blade chamber for driving the shutter blade to open and close an exposure opening with the reciprocal rotation of the DC motor. A brake member rotatably attached to the shutter base board and having a frictional force applied thereto by a spring washer brakes the rotation of the drive member when a bent portion is pushed by the drive pin to rotate.

REFERENCES:
patent: 4290682 (1981-09-01), Saito et al.
patent: 4407574 (1983-10-01), Tomino et al.
patent: 4657366 (1987-04-01), Tanabe et al.
patent: 6089760 (2000-07-01), Terada
patent: 6536962 (2003-03-01), Takahashi
patent: 6547457 (2003-04-01), Yaginuma et al.
patent: 6726379 (2004-04-01), Watabe et al.
patent: 2002/0006285 (2002-01-01), Takahashi
patent: 06-308570 (1994-11-01), None
patent: 10-003108 (1998-01-01), None
patent: 11-122542 (1999-04-01), None
patent: 2002-287210 (2002-10-01), None
patent: 2003-107559 (2003-04-01), None

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