US PATENT SUBCLASS 417 / 561
.~.~ Pumping member position responsive stop for distributor

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}
561.~.~ Pumping member position responsive stop for distributor

DEFINITION

Classification: 417/561

(under subclass 559) Apparatus in which means are provided to prevent movement of said valve means, said means being effective in response to the pumping member attaining a given position in the chamber.

SEE OR SEARCH THIS CLASS, SUBCLASS:

446, for selectively operable means for holding pressure responsive distributor open.