Gas pressure device for driving operating means in a camera

Details Gas pressure device for driving operating means in a camera Gas pressure device for driving operating means in a camera

1975-10-16

1977-01-04

Peters, Jr., Joseph F.

354202, 354288, 354295, G03B 1700

Patent

active

040018512

ABSTRACT:
Gas pressure is used for driving such operating members in a camera as a mirror swing up lever, a diaphragm control lever and a shutter operating mechanism. A gas cylinder containing a liquefied gas is connected with a cylinder having a piston by way of a flow control valve. The piston is connected with an operating member in the camera. In a preferred embodiment of the invention, a pressure regulating valve is provided between the gas cylinder and a subtank for storing vaporized gas at a room temperature to effect accurate control of operating members by the gas having a constant pressure.

REFERENCES:
patent: 2699102 (1955-01-01), Doyle et al.
patent: 2837017 (1958-06-01), Hough
patent: 2874625 (1959-02-01), Thalhammer

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