Optical window protective shutter mechanism

Details Optical window protective shutter mechanism Optical window protective shutter mechanism

1976-01-20

1977-01-25

Gerin, Leonard H.

Machine element or mechanism

Mechanical movements

Rotary to intermittent unidirectional motion

74436, F16H 2704, F16H 5504

Patent

active

040044653

ABSTRACT:
A visor-like, protective hood assembly consisting of a segmented shutter for covering an optical window and including three hemispherical shutter segments of increasing radii and pivoted about a common pivot for relocation between a retracted, open and nested relation and an extended, closed position. A drive motor, coupled with a Geneva mechanism, directly and intermittently drives the outermost shutter segment, and trailing edge lips on each segment engage with and respectively drive the intermediate and inner segments to their fully extended, closed positions in a protective relation over the window.

REFERENCES:
patent: 3361005 (1968-01-01), Carpenter
patent: 3386636 (1968-06-01), Badalich
patent: 3552234 (1971-01-01), Gallina
patent: 3831458 (1974-08-01), Takanashi et al.

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