US PATENT SUBCLASS 324 / 509
.~ Of ground fault indication

Current as of: June, 1999
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324 /   HD   ELECTRICITY: MEASURING AND TESTING

500  DF  FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS {10}
509.~ Of ground fault indication {1}
510  DF  .~.~> Of electrically operated apparatus (power tool, appliance, machine, etc.)

DEFINITION

Classification: 324/509

Of ground fault indication:

(under subclass 500) Subject matter for detecting an unintentional electrical path where defective insulation causes an electrical conductor to leak current to ground.

SEE OR SEARCH THIS CLASS, SUBCLASS:

508, for determining a ground fault in a line wire connected to a receptacle.

541, for insulation fault in a multiconductor cable.

544, for insulation fault in a single conductor cable.

551, for insulation fault.

SEE OR SEARCH CLASS 361, Electricity: Electrical Systems and Devices,

42+, for ground fault protection control circuits, and subclass 170 for relay circuits responsive to external conditions.