Shutter device having eccentric pin for adjusting urging force

Details Shutter device having eccentric pin for adjusting urging force Shutter device having eccentric pin for adjusting urging force

1997-12-17

1999-06-22

Lee, Eddie C.

Photography

Camera detail

Shutter

396493, G03B 914

Patent

active

059151412

ABSTRACT:
A shutter device includes a base member, a plurality of shutter blades supported by the base member and each arranged to turn in opposite directions, a shutter blade driving lever having an engaging part which engages the plurality of shutter blades and arranged to turn so as to cause each of the plurality of shutter blades to turn in the opposite directions, an eccentric pin which is rotatable, and a spring having one end thereof connected to the shutter blade driving lever and the other end thereof connected to the eccentric pin, and arranged to drive the plurality of shutter blades by urging the shutter blade driving lever in one direction, wherein an urging force of the spring is adjustable by rotating the eccentric pin.

REFERENCES:
patent: 4264170 (1981-04-01), Kurei
patent: 4342506 (1982-08-01), Johnson et al.

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