US PATENT SUBCLASS 477 / 52
.~ Including 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.~ Including fluid drive {2}
53  DF  .~.~> Impeller-turbine-type {8}
68  DF  .~.~> Ratio control {1}

DEFINITION

Classification: 477/52

Including fluid drive:

(under subclass 34) Subject matter wherein the combination of a hydraulic or pneumatic torque transmitting means and a gear transmission* is interrelated with control of the engine*.