Photography – With film drive – Mechanical detail
Patent
1995-09-06
1998-03-17
Blankenship, Howard B.
Photography
With film drive
Mechanical detail
G03B 118
Patent
active
057297827
ABSTRACT:
A camera film feed drive system has reduced vibration and noise during winding and rewinding of photographic film. The camera film feed drive system includes a camera body, film drive motor, film winding spool, and a plurality of noise absorbers. The camera body provides structural support and the film drive motor winds and rewinds the photographic film. The film winding spool rotates in response to the film drive motor and directly contacts the photographic film. A reduction drive unit is connected between the film drive motor and the camera body. A plurality of rotatable gears are operatively connected to the film drive motor and are supported by the reduction drive unit. The camera film feed drive system particularly includes a first noise absorber disposed between the reduction drive unit and the camera body and a plurality of second noise absorbers, respectively disposed about a plurality of corresponding threaded fasteners for reducing vibration and noise during winding and rewinding of the photographic film. The first noise absorber is a circular member which mates between a circumferential bead in a chamber of the camera body and the reduction drive unit. Each of the second noise absorbers is a cylinder having a top end peripheral bead and a bottom end peripheral bead for being received within a pair of axial bores within the reduction drive unit.
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patent: 4121886 (1978-10-01), Gottschalk
patent: 4174157 (1979-11-01), Gottschalk
patent: 4536066 (1985-08-01), Bauer
patent: 5237352 (1993-08-01), Grosser et al.
patent: 5479231 (1995-12-01), Tanaka
Blankenship Howard B.
Nikon Corporation
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