Dual-pivot shutter device

Details Dual-pivot shutter device Dual-pivot shutter device

1999-05-21

2000-09-05

Adams, Russell

Photography

Camera detail

Shutter

396452, 396495, G03B 910

Patent

active

061132861

ABSTRACT:
A shutter device comprises a single piece having a blade portion that includes an impact receiving member which when impacted in an opening direction with a shutter actuator moves the blade portion to uncover an aperture, a first resilient portion bendable about a first pivot point to allow movement of the blade portion to uncover the aperture and reversible about the first pivot point to move the blade portion to recover the aperture, and a second resilient portion bendable about a second pivot point to allow movement of the blade portion without uncovering the aperture, in order to permit the shutter actuator to move the impact receiving member out of its way when the shutter actuator is returned in a reverse direction.

REFERENCES:
patent: 1701121 (1929-02-01), Riddell
patent: 3672285 (1972-06-01), Stoneham
patent: 3816843 (1974-06-01), Couture

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