US PATENT SUBCLASS 60 / 470
.~ Externally operated multiway valve or interconnected control elements control motive fluid for a limited stroke to-and-fro device

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

325  DF  PRESSURE FLUID SOURCE AND MOTOR {47}
470.~ Externally operated multiway valve or interconnected control elements control motive fluid for a limited stroke to-and-fro device {2}
471  DF  .~.~> Having plural distinct or separately operable output means
472  DF  .~.~> Flow to opposed expansible chambers having a common output reversed

DEFINITION

Classification: 60/470

(under subclass 325) Apparatus including structure controlling flow of motive fluid between a pressure fluid source and an output device to move the output member between plural positions, the structure comprising a multiway valve or a system of valves mechanically or electrically interlinked for correlated action under the control of an operator.

SEE OR SEARCH THIS CLASS, SUBCLASS:

388, for a motor positioning manipulator with a feedback linkage providing full range correspondence of the position of the manipulating handle and the output.

393, for a system having structure to impress a feel of the load or pressure in the motor on the manipulating handle to give a feel of the load.

429, for an automatic system having a multiway valve changing the relationship of separately operable input pumps.

434, for a system in which a pump drive controller is connected for joint operation with the valve manipulating handle. 462, for a stroke device controlled by an externally operated multiway valve and that has condition responsive structure.

463, for a system in which a multiway valve manipulating a stroke device is responsive to an external condition.