US PATENT SUBCLASS 475 / 85
.~.~ Special fluid

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}
85.~.~ Special fluid

DEFINITION

Classification: 475/85

Special fluid:

(under subclass 84) Subject matter wherein significance is attributed to the type of fluid, or the physical characteristics thereof, used to control the differential transmission*.

SEE OR SEARCH THIS CLASS, SUBCLASS:

160, for a fluid which is used to lubricate a differential. [figure] [caption]fluid is silicone polymer