US PATENT SUBCLASS 417 / 562
.~.~ Having means on pumping member for accommodating distributor portion


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}
562.~.~ Having means on pumping member for accommodating distributor portion


DEFINITION

Classification: 417/562

(under subclass 559) Apparatus in which a portion of the valve means or valve supporting means extends into the pumping chamber from a fixed wall thereof and in which a wall of the pumping member is provided with a groove, recess or indentation for receiving said valve means or valve supporting means during movement of the pumping member in the normal operation thereof in the pumping chamber.