Bound preventing device for focal plane shutters

Details Bound preventing device for focal plane shutters Bound preventing device for focal plane shutters

1979-12-04

1981-11-24

Gonzales, John

354252, G03B 940

Patent

active

043020917

ABSTRACT:
A bound preventing device for focal plane shutters which is provided with a rear blade operating arm which can move a rear blade between an exposure aperture covering position and opening position and a brake lever which is set in the motion track of the rear blade operating arm and can collide with a rear blade operating lever in order to control the rear blade operating arm in the final stage of the motion of the rear blade operating arm so as to prevent bounds when the motion of the rear blade ends. This brake lever can also catch the rear blade operating arm when it collides with the rear blade operating arm.

REFERENCES:
patent: 3847476 (1974-11-01), Onda et al.
patent: 3946413 (1976-03-01), Onda et al.
patent: 4109266 (1978-08-01), Inoue
patent: 4110772 (1978-08-01), Nakagawa et al.
patent: 4142789 (1979-03-01), Koyama et al.

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