US PATENT SUBCLASS 417 / 358
.~ Pump - motor unit raised in vertical conduit by pressure fluid applied below unit


Current as of: June, 1999
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417 /   HD   PUMPS

321  DF  MOTOR DRIVEN {32}
358.~ Pump - motor unit raised in vertical conduit by pressure fluid applied below unit


DEFINITION

Classification: 417/358

(under subclass 321) Apparatus in which the pump and motor are carried in or from unitary structure which is movable through a vertically disposed fluid conduit by fluid under pressure applied beneath the structure to elevate the pump and motor from a working position at the lower end of the conduit to an inoperative position at the upper end.