US PATENT SUBCLASS 417 / 527
.~.~.~.~ Fluid conduit for one chamber extends through portion of another

Current as of: June, 1999
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417 /   HD   PUMPS

437  DF  EXPANSIBLE CHAMBER TYPE {40}
521  DF  .~ Plural pumping chambers {7}
523  DF  .~.~ Including valved piston {5}
525  DF  .~.~.~ Common piston includes valves for plural axially aligned chambers {2}
527.~.~.~.~ Fluid conduit for one chamber extends through portion of another

DEFINITION

Classification: 417/527

(under subclass 525) Apparatus in which the inlet or discharge conduit for the first pumping chamber extends axially through a portion of the second pumping chamber.

SEE OR SEARCH THIS CLASS, SUBCLASS:

526, for a common pumping member having valves for aligned pumping chambers and a conduit which forms a common inlet or discharge for the chambers mounted on the pumping member and extending through at least one of the chambers.