US PATENT SUBCLASS 477 / 68
.~.~ Ratio control

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}
68.~.~ Ratio control {1}
69  DF  .~.~.~> With planetary transmission control

DEFINITION

Classification: 477/68

Ratio control:

(under subclass 52) Subject matter wherein the speed ratio of the fluid torque transmitting means is regulated by the engine*.

SEE OR SEARCH CLASS

60, Power Plants,

445+, for condition responsive control of hydrostatic pump and motor units.