US PATENT SUBCLASS 417 / 450
.~.~ With latching or anchoring means released by rod movement


Current as of: June, 1999
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417 /   HD   PUMPS

437  DF  EXPANSIBLE CHAMBER TYPE {40}
448  DF  .~ Pump mounted in vertical tubular flow conduit removable as unit by driving rod manipulation {2}
450.~.~ With latching or anchoring means released by rod movement


DEFINITION

Classification: 417/450

(under subclass 448) Apparatus in which the means for mounting the pump in the tube includes relatively movable parts for positively holding the pump against movement in the tube; the release of the pump being effected by the movement of one of the parts by the operating rod for the pumping member.