Pneumatic film holding device

Details Pneumatic film holding device Pneumatic film holding device

1979-07-05

1981-03-31

Stephan, Steven L.

Optics: image projectors

Film gate

352147, 353 61, G03B 2116, G03B 148

Patent

active

042589878

ABSTRACT:
A device for holding film in a projector is disclosed, in which the film is loosely held between two transparent plates, and air is supplied between one of the transparent plates and the film, so as to clamp the film to the other transparent plate. Thereby the film is gently and positively held, and is also cooled.

REFERENCES:
patent: 2443171 (1948-06-01), Tuttle
patent: 3400995 (1968-09-01), Borberg et al.

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