US PATENT SUBCLASS 361 / 91.2
.~.~.~ With resistor sensor

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}
88  DF  .~ With specific voltage responsive fault sensor {4}
91.1  DF  .~.~ Overvoltage {6}
91.2.~.~.~ With resistor sensor

DEFINITION

Classification: 361/91.2

With resistor sensor:

(under subclass 91.1) Subject matter including a device offering resistance to a flow of electric current and wherein the overvoltage condition is detected across the device.

SEE OR SEARCH THIS CLASS, SUBCLASS:

5+, switch position dependent upon sensed current across a resistance.

31, for sensing abnormal voltage conditions in motor circuits by sensing across resistance.

57, for load shunting by sensing an abnormal voltage condition across resistance.

63+, for feeder protection with disconnect by sensing an abnormal voltage condition across resistance.

78+, for quantity comparisons including sensing overvoltage conditions across resistance. SEE OR SEARCH CLASS

324, Electricity: Measuring and Testing,

522, for measuring resistance, per se.

338, Electrical Resistors,

21, for a resistor responsive to surge voltage conditions.