US PATENT SUBCLASS 361 / 21
.~.~ Voltage responsive

Current as of: June, 1999
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361 /   HD   ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES

1  DF  SAFETY AND PROTECTION OF SYSTEMS AND DEVICES {32}
20  DF  .~ Generator protective circuits {1}
21.~.~ Voltage responsive

DEFINITION

Classification: 361/21

Voltage responsive:

(under subclass 20) Subject matter wherein a fault sensor responds to an abnormal voltage condition in either the load circuit or the generator field circuit.

SEE OR SEARCH THIS CLASS, SUBCLASS:

6, for voltage responsive control means in arc suppression circuits.

33, for voltage responsive control circuits in motor protective systems.

56, for voltage responsive control circuits in load shunting systems.

86, for voltage responsive control circuits in quantity comparison circuits.

88+, for voltage responsive fault sensors. SEE OR SEARCH CLASS

340, Communications: Electrical,

635+, for electrical apparatus condition responsive signalling device.