US PATENT SUBCLASS 417 / 520
.~.~ Distributor abutted by or frictionally engaged with pumping member


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



417 /   HD   PUMPS

437  DF  EXPANSIBLE CHAMBER TYPE {40}
510  DF  .~ Mechanically actuated distributor {5}
520.~.~ Distributor abutted by or frictionally engaged with pumping member


DEFINITION

Classification: 417/520

(under subclass 510) Apparatus in which a portion of the valve element or a member connected thereto is either (1) frictionally connected with the pumping member or (2) is located in the path of pumping member movement and adapted to be moved by contact therewith at some portion of the pumping member stroke.

SEE OR SEARCH THIS CLASS, SUBCLASS:

443+, for means for actuating a pressure responsive distributor to an open position responsive to pumping member position.

490+, for an inlet or discharge port formed in a pumping member or chamber wall which is controlled by an element carried by the other.