US PATENT SUBCLASS 352 / 190
.~.~ Special type gearing

Current as of: June, 1999
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352 /   HD   OPTICS: MOTION PICTURES

166  DF  CAMERA AND/OR PROJECTOR DRIVE MECHANISMS {14}
187  DF  .~ With intermittently driven carrier-engaging sprocket {3}
190.~.~ Special type gearing

DEFINITION

Classification: 352/190

(under subclass 187) Subject matter where the driving means includes a special gear pair which because of an irregular shape or toothing arrangement drives the sprocket in a nonuniform fashion with a uniform rotation of one of the gears of said pair.