Telescopic convertible camera

Details Telescopic convertible camera Telescopic convertible camera

1977-03-24

1978-07-04

Griffin, Donald A.

354197, 354250, G03B 908, G03B 1302, G03B 910

Patent

active

040991911

ABSTRACT:
In a preferred embodiment, a camera convertible from a camera employing normal-focusing lens for picture-taking, to and from a camera employing telescopic lens, within a unitary housing, having the lens mechanism slidably movable intermittently as desired between the two alternate states, with the lenses shutter mechanism being a structure in fixed position behind the lens, in a predetermined position to alternately block exposing focused light and to transmit exposing focused light to an exposable film posterior to the lens shutter mechanism, the mechanism being a pivoted door structure spring-biased to a closed state of light-blocking function, actuatable intermittently to a light-exposing state by cocked force-exerting member acting through a slip-clutch mechanism.

REFERENCES:
patent: 1789289 (1931-01-01), Azarraga
patent: 2408811 (1946-10-01), Resk
patent: 2896525 (1959-07-01), Smith
patent: 3558226 (1971-01-01), Riggs et al.
patent: 3707118 (1972-12-01), Stoneham et al.
patent: 3720149 (1973-03-01), Ishizaka et al.
patent: 3890626 (1975-06-01), Ettischer
patent: 3893135 (1975-07-01), Matsui et al.
patent: 3893137 (1975-07-01), Ettischer
patent: 4038671 (1977-07-01), Schroder et al.

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