US PATENT SUBCLASS 417 / 569
.~.~ Distributor positioned opposite pumping member end face

Current as of: June, 1999
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417 /   HD   PUMPS

437  DF  EXPANSIBLE CHAMBER TYPE {40}
559  DF  .~ Having pumping chamber pressure responsive distributor {8}
569.~.~ Distributor positioned opposite pumping member end face {2}
570  DF  .~.~.~> Distributor coextensive with pumping member end face
571  DF  .~.~.~> Inlet and discharge distributors

DEFINITION

Classification: 417/569

(under subclass 559) Apparatus in which the inlet or discharge valve is positioned in a fixed wall of the working chamber which is opposite the end face of the pumping member when in operative position in the pumping chamber.

SEE OR SEARCH THIS CLASS, SUBCLASS:

482+, for an oscillating pumping member with a distributor in an abutment wall for the pumping member.