US PATENT SUBCLASS 60 / 444
.~.~ Having auxiliary pump or external source of motive fluid supplying servo motor

Current as of: June, 1999
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60 /   HD   POWER PLANTS

325  DF  PRESSURE FLUID SOURCE AND MOTOR {47}
443  DF  .~ Servo-motor having externally operated control valve sets motor or pump displacement {1}
444.~.~ Having auxiliary pump or external source of motive fluid supplying servo motor

DEFINITION

Classification: 60/444

(under subclass 443) Apparatus in which the servo-motor has an external source of operating fluid or an auxiliary pump so that it is independent of the operation of the controlled pump or motor.