Film transport mechanism

Details Film transport mechanism Film transport mechanism

1996-05-08

1996-12-24

Metjahic, Safet

Optics: motion pictures

Camera and/or projector drive mechanisms

With continuous feed and intermittent film arresting means

G03B 100

Patent

active

055877508

ABSTRACT:
A compact rolling loop motion picture projector has a rotor of significantly smaller diameter than a conventional such rotor. The radius of curvature of the rotor is selected to be significantly less than the radius of curvature of a film flattener element on which the film is located for projection, and the axis of rotation of the rotor is offset towards a film input sprocket of the projector so as to maintain a minimum film gap between the rotor and the field flattener upstream of the optical axis of the projector. The compact rotor is rotationally supported from above by a "spider" and a projection lamp is located below the rotor for compactness and efficiency of lamp operation.

REFERENCES:
patent: 3494524 (1970-02-01), Jones
patent: 3600073 (1971-08-01), Shaw
patent: 3794415 (1974-02-01), Jones
patent: 4039256 (1977-08-01), Teeple, Jr. et al.
patent: 4114996 (1978-09-01), Shaw
patent: 4365877 (1982-12-01), Shaw
patent: 4441796 (1984-04-01), Shaw

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