US PATENT SUBCLASS 475 / 120
.~.~.~ Pressure control

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}
116  DF  .~ Fluid controlled mechanical clutch or brake {12}
118  DF  .~.~ Speed responsive control {3}
120.~.~.~ Pressure control

DEFINITION

Classification: 475/120

Pressure control:

(under subclass 118) Subject matter wherein the control affects the force exerted by the fluid utilized to regulate the operation of the transmission.