US PATENT SUBCLASS 477 / 58
.~.~.~.~ Control of or by fluid drive

Current as of: June, 1999
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477 /   HD   INTERRELATED POWER DELIVERY CONTROLS, INCLUDING ENGINE CONTROL

34  DF  TRANSMISSION CONTROL {15}
52  DF  .~ Including fluid drive {2}
53  DF  .~.~ Impeller-turbine-type {8}
55  DF  .~.~.~ With countershaft gearing {3}
58.~.~.~.~ Control of or by fluid drive

DEFINITION

Classification: 477/58

Control of or by fluid drive:

(under subclass 55) Subject matter wherein the operation of the fluid torque transmitting means is regulated or a condition thereof is effective to regulate the gear transmission*.

SEE OR SEARCH THIS CLASS, SUBCLASS:

57, for control of the fluid drive by the regulation of a lockup or bypass clutch.