US PATENT SUBCLASS 60 / 487
.~ Input pump and rotary output motor system having displacement varying type of direction or speed selector

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

325  DF  PRESSURE FLUID SOURCE AND MOTOR {47}
487.~ Input pump and rotary output motor system having displacement varying type of direction or speed selector {3}
488  DF  .~.~> Including auxiliary system feed pump
489  DF  .~.~> Having valve means controlling flow between pump and motor
490  DF  .~.~> Both motor and pump have displacement adjustment means {1}

DEFINITION

Classification: 60/487

(under subclass 325) Apparatus comprising a pump feeding a rotary motor, either the pump or motor including externally settable internal structure by which the amount of motive fluid moved therethrough on each cycle or revolution may be selected or by which the direction of flow therethrough may be reversed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

389, for a system in which a displacement adjuster is positioned by a servo-motor having a feed-back linkage.

443, for a system in which a displacement adjuster is positioned by a manually controlled servo-motor.

445, for a system in which a displacement adjuster is positioned by a condition responsive means.

465, for a system having a manual displacement adjuster in combination with a condition responsive motive fluid flow controller.