US PATENT SUBCLASS 475 / 238
.~.~.~.~ Friction clutch

Current as of: June, 1999
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475 /   HD   PLANETARY GEAR TRANSMISSION SYSTEMS OR COMPONENTS

220  DF  DIFFERENTIAL PLANETARY GEARING {8}
230  DF  .~ Bevel gear differential {4}
231  DF  .~.~ With means to limit overspeed of one output (e.g., lock-up clutch) {6}
237  DF  .~.~.~ Manual actuator {1}
238.~.~.~.~ Friction clutch {1}
239  DF  .~.~.~.~.~> Plate clutch

DEFINITION

Classification: 475/238

Friction clutch:

(under subclass 237) Subject matter wherein said restricting means comprises a clutch* in which pressure and resultant friction between faces of two relatively movable parts causes the parts to have common movement.