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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Optical & Optics
Class Information
Number: 352/182
Name: Optics: motion pictures > Camera and/or projector drive mechanisms > With speed regulation or selection > By braking
Description: Subject matter in which the regulation or selection means includes a member frictionally engaging a driven element to slow the speed of said driven element.


Patents under this class:

Patent Number Title Of Patent Date Issued
5546143 Recording device and projecting device for motion picture film Aug. 13, 1996
5345286 Method and apparatus for controlling film drive Sep. 6, 1994
5187508 Film transport device Feb. 16, 1993
5175573 Film transport device Dec. 29, 1992
5110201 Film transport device May. 5, 1992
5050985 Film deceleration unit Sep. 24, 1991
4697896 Electronic projector Oct. 6, 1987
4669841 Rotary shutter Jun. 2, 1987
4418994 Film magazine for motion picture camera Dec. 6, 1983
4144991 Film tensioning device Mar. 20, 1979
4081211 Processing condition control system for a multi-purpose film handling cartridge Mar. 28, 1978
3933412 Processing system utilizing a multi-purpose film handling cartridge Jan. 20, 1976



 
 
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