US PATENT SUBCLASS 417 / 45
.~.~ By changing electrical characteristic of motor or motor circuit


Current as of: June, 1999
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417 /   HD   PUMPS

1  DF  CONDITION RESPONSIVE CONTROL OF PUMP DRIVE MOTOR {22}
44.1  DF  .~ By control of electric or magnetic drive motor {3}
45.~.~ By changing electrical characteristic of motor or motor circuit


DEFINITION

Classification: 417/45

Subject matter under subclasses 44.1+ in which the motor is electrically operated and the motor or electric supply circuit therefor includes an electrical component (e.g., resistance element, starting winding, etc.) which is either (1) adjustable to change its electrical value or characteristic or (2) capable of being included in or shunted out of the main motor circuit; and in which the control means acts to control the adjustment or shunting of the component in response to the sensed condition.