US PATENT SUBCLASS 417 / 516
.~.~.~ Common element forms inlet or discharge distributor for plural chambers

Current as of: June, 1999
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417 /   HD   PUMPS

437  DF  EXPANSIBLE CHAMBER TYPE {40}
510  DF  .~ Mechanically actuated distributor {5}
515  DF  .~.~ Plural pumping chambers {1}
516.~.~.~ Common element forms inlet or discharge distributor for plural chambers {1}
517  DF  .~.~.~.~> Element forms both inlet and discharge distributor

DEFINITION

Classification: 417/516

(under subclass 515) Apparatus in which the valve element comprises a single unitarily movable member which controls either (1) the inlet of pump fluid to two or more pump chambers or (2) the discharge or pump fluid from two or more pump chambers.

SEE OR SEARCH THIS CLASS, SUBCLASS:

512, for a single mechanically actuated distributor element which is located within or carried by a pump piston which controls pump fluid inlet to or discharge from plural pump chambers.