US PATENT SUBCLASS 417 / 276
.~.~ Connectable clearance chambers of opposed pump chambers

Current as of: June, 1999
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417 /   HD   PUMPS

274  DF  CONDITION RESPONSIVE VARIABLE VOLUMETRIC CAPACITY EXPANSIBLE CHAMBER PUMP (I.E., CLEARANCE CONTROL) {1}
275  DF  .~ Valved clearance chamber {2}
276.~.~ Connectable clearance chambers of opposed pump chambers

DEFINITION

Classification: 417/276

(under subclass 275) Apparatus in which the pump is of the double acting type having two pumping chambers, each of said pumping chambers being connected to a separate clearance chamber, and at least two of the separate clearance chambers

being interconnected by valve means.