US PATENT SUBCLASS 417 / 25
.~ Relatively movable elements sensing same system pressure for single control element


Current as of: June, 1999
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417 /   HD   PUMPS

1  DF  CONDITION RESPONSIVE CONTROL OF PUMP DRIVE MOTOR {22}
25.~ Relatively movable elements sensing same system pressure for single control element


DEFINITION

Classification: 417/25

(under subclass 1) Subject matter comprising two or more pressure responsive sensing elements which either simultaneously, successively, or selectively respond to a change in pressure occurring in the same part of the system (e.g., both respond to pump discharge pressure) for effecting operation of a single motor control element.