US PATENT SUBCLASS 475 / 70
.~.~.~ Pressure controlled

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}
59  DF  .~ Impeller-turbine type fluid circuit in series with planetary gearing {6}
69  DF  .~.~ Fluid circuit controlled {1}
70.~.~.~ Pressure controlled

DEFINITION

Classification: 475/70

Pressure controlled:

(under subclass 69) Subject matter wherein the fluid torque transmitting means is regulated by controlling the pressure within said means. [figure] [caption]powershift transmission control valve; powershift transmission control elements; torque converter