Shutter release mechanism

Details Shutter release mechanism Shutter release mechanism

1978-01-06

1980-01-08

Hix, L. T.

354266, G03B 1738

Patent

active

041825667

ABSTRACT:
In a camera, a motion transmitting member has a wedge-shaped end portion inserted between a shutter release member and a shutter restraining member. Manual depression of the release member pivots the motion transmitting member, which moves the restraining member to free the camera shutter for exposure. A spring member urges the motion transmitting member to maintain its wedge-shaped end portion in mutual contact with the release and restraining members. The spring-urging automatically adjusts the position of the motion transmitting member between the release and restraining members to compensate for wear of their contacting surface portions and substantially prevents any lost motion or lag between manual depression of the release member and movement of the restraining member to enable shutter actuation. Following shutter actuation, manual movement of a film member causes an extracting member to remove the motion transmitting member from between the release and restraining members. As a result, the release member cannot effect shutter actuation during film advance, even though it is still able to be manually depressed.

REFERENCES:
patent: 2742835 (1956-04-01), Owens
patent: 2865272 (1958-12-01), Deffenbaugh et al.
patent: 3590703 (1971-07-01), Ono
patent: 3690228 (1970-03-01), Yamashita et al.
patent: 4119987 (1978-10-01), Beach

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