US PATENT SUBCLASS 417 / 344
.~.~.~ Position of one working member controls motive fluid valve for another

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.~.~.~ Position of one working member controls motive fluid valve for another {2}
345  DF  .~.~.~.~> Control by single member responsive to position of each of plural working members
346  DF  .~.~.~.~> Independently operated valve for each working member

DEFINITION

Classification: 417/344

(under subclass 339) Apparatus in which there is provided valve means for controlling motive fluid for one of said working members, said valve means being controlled in response to another working member attaining a predetermined position.

(1) Note. The valve means under this definition which controls motive fluid for one working member may comprise a cylinder port controlled by the working member of another.