Document Type and Number:
Japanese Patent JPS4825530
Kind Code:
A
Abstract:
A device for allowing rewinding of the film in a sound motion picture projector, wherein the drive sprocket intended for uniformly driving the film on the pick-up members of the sound track is idly mounted on its driven shaft, and a unidirectional joint is inserted between the shaft and the sprocket for connecting rigidly both parts in the forward direction of rotation and for allowing free rotation of the sprocket when the shaft rotates in reverse direction.
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Application Number:
JP7333172A
Publication Date:
April 03, 1973
Filing Date:
July 21, 1972
Export Citation:
International Classes:
G03B31/02; G03B31/00; G11B15/34; (IPC1-7): G03B21/43