US PATENT SUBCLASS 475 / 87
.~.~.~ Operated by viscous drag

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

31  DF  FLUID DRIVE OR CONTROL OF PLANETARY GEARING {11}
84  DF  .~ Control of differential planetary gearing {3}
86  DF  .~.~ By fluid operated mechanical clutch {2}
87.~.~.~ Operated by viscous drag

DEFINITION

Classification: 475/87

Operated by viscous drag:

(under subclass 86) Subject matter wherein the mechanical clutch* is controlled by the retarding force transmitted between two relatively rotating parts by a fluid medium. [figure] [caption]Viscus Drag between 76 & 86 engages one-way clutch