US PATENT SUBCLASS 475 / 31
FLUID DRIVE OR CONTROL OF PLANETARY GEARING

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

31FLUID DRIVE OR CONTROL OF PLANETARY GEARING {11}
32  DF  .~> Diverse fluid drives
33  DF  .~> Plural impeller-turbine type fluid circuits {1}
35  DF  .~> Single impeller-turbine type fluid circuit divides or combines plural power paths {6}
47  DF  .~> Impeller-turbine type fluid circuit and mechanical path in parallel {9}
59  DF  .~> Impeller-turbine type fluid circuit in series with planetary gearing {6}
72  DF  .~> Fluid pump and motor in one of plural paths to or from planetary gearing {6}
83  DF  .~> Pump and motor in series with planetary gearing
84  DF  .~> Control of differential planetary gearing {3}
91  DF  .~> Fluid resistance inhibits relative rotation {5}
114  DF  .~> Fluid control of friction planetary gearing {1}
116  DF  .~> Fluid controlled mechanical clutch or brake {12}

DEFINITION

Classification: 475/31

FLUID DRIVE OR CONTROL OF PLANETARY GEARING:

(under the class definition) Subject matter wherein (1) a planetary transmission is combined with a hydraulic or pneumatic torque transmitting means to form a drive train*, or (2) means is provided to change the speed ratio* or otherwise regulate the operation of a planetary transmission and such means is actuated, at least in part, by hydraulic or pneumatic energy.

SEE OR SEARCH THIS CLASS, SUBCLASS:

18+, for fluid drive or control in a steering by driving arrangement.

SEE OR SEARCH CLASS

477, Interrelated Power Delivery Controls, Including Engine Control, for fluid drive or control of planetary gearing in combination with prime mover control. [figure] [caption]fluid equalizes axial thrust on gears