Closure mechanism such as a camera shutter

Details Closure mechanism such as a camera shutter Closure mechanism such as a camera shutter

1978-11-20

1980-05-27

Hix, L. T.

Implements or apparatus for applying pushing or pulling force

Device or member for contacting and guiding moving cable

Including rotatable, cable contacting, pulley wheel element

354203, 254226, G03B 1912, G03B 908

Patent

active

042047587

ABSTRACT:
A closure mechanism, such as a shutter in a camera, includes a closure member having an arcuate portion arranged to roll on a support member to cause a part of the closure member to move across an aperture thereby providing a movable barrier permitting selective communication of the aperture with spaces on opposite sides of the closure member. When used in a camera, the closure member is accommodated in an enclosure of which one wall includes the aperture, which may be a fibre optic plate. The closure member is movable between two extreme positions; in one position a mirror carried by the closure member optically couples the aperture with a viewing system and in the other position it blocks the viewing system while a film is located adjacent the aperture by a mechanism actuated in synchronism with the closure member.

REFERENCES:
patent: 1827464 (1931-10-01), Denniss et al.
patent: 1829332 (1931-10-01), Beck
patent: 1997130 (1935-04-01), Weisse
patent: 3654844 (1972-04-01), Hampton
patent: 3785270 (1974-01-01), Schiff et al.

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