US PATENT SUBCLASS 417 / 346
.~.~.~.~ Independently operated valve for each working member

Current as of: June, 1999
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417 /   HD   PUMPS

321  DF  MOTOR DRIVEN {32}
338  DF  .~ Relatively movable pumping members driven by relatively movable working members {1}
339  DF  .~.~ Nonrotary pumping and fluid motor working members {5}
344  DF  .~.~.~ Position of one working member controls motive fluid valve for another {2}
346.~.~.~.~ Independently operated valve for each working member

DEFINITION

Classification: 417/346

(under subclass 344) Apparatus having a separate motive fluid control valve for each working member and separate actuating means for each valve, and wherein each working member separately controls an actuating means for a valve controlling motive fluid for another of said working members.

(1) Note. The motive fluid control valve for one working member and the actuating means therefor may comprise a cylinder port controlled by the working member of another.