Camera shutter having bound prevention device

Details Camera shutter having bound prevention device Camera shutter having bound prevention device

1977-10-03

1978-08-29

Griffin, Donald A.

354252, G03B 908, G03B 940

Patent

active

041107721

ABSTRACT:
A camera shutter has a set of shutter blades movable from an initial closed position in which the blades close an exposure aperture to an open position opening the exposure aperture and then to a final closed position again closing the exposure aperture. Opening and closing driving members sequentially drive the shutter blades from the initial closed position to the open position and then to the final closed position to effect an exposure. A cocking mechanism coacts with the opening and closing driving members for cocking the camera shutter to move the shutter blades from the final closed position to the initial closed position in readiness for taking an exposure. A rebound preventing device is provided for preventing rebound of the shutter blades after reaching their final closed positions and comprises a notched pin on a lever of the cocking mechanism engageable with a hook portion of the closing drive member to thereby prevent rebounding of the shutter blades. During cocking of the camera shutter, the cocking mechanism disengages from the opening and closing driving members which are thereafter free to effect an exposure.

REFERENCES:
patent: 3698304 (1972-10-01), Tenkumo
patent: 3722392 (1973-03-01), Kitai
patent: 3825940 (1974-07-01), Hayami
patent: 3840885 (1974-10-01), Yoshizaki
patent: 3847476 (1974-11-01), Onda et al.
patent: 3946413 (1976-03-01), Onda et al.
patent: 3946414 (1976-03-01), Kitai

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