US PATENT SUBCLASS 60 / 388
.~ Full range correspondence of position of external manipulator and motor positioned member effected by feedback linkage

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

325  DF  PRESSURE FLUID SOURCE AND MOTOR {47}
388.~ Full range correspondence of position of external manipulator and motor positioned member effected by feedback linkage {4}
389  DF  .~.~> Positioned member is displacement controller of second motor pump
390  DF  .~.~> Electrical feedback means
391  DF  .~.~> Feedback linkage controls variable displacement pump
392  DF  .~.~> Feedback includes plural movable valve parts

DEFINITION

Classification: 60/388

(under subclass 325) Apparatus having output motor; an externally operated manipulator means movable over a range for causing the motor to position an output member in a corresponding position along a selected path or in a selected area; and an electrical or mechanical connection between the output member and the manipulator correcting any discrepancy between the position assigned by the manipulator and that attained by the output.

SEE OR SEARCH THIS CLASS, SUBCLASS:

384, for a system in which a fluid means measures the movement of the output and gives a feedback to the motor controller.

SEE OR SEARCH CLASS

91, Motors: Expansible Chamber Type,

358+, for a motor having working member position feedback to the motive fluid controller. 172, Earth Working,

465, for an earth working tool having a tool lifting motor with follow-up controls.

180, Motor Vehicles,

132+, for a motor vehicle provided with steering gear of the fluid power assist type, which may involve feedback.