US PATENT SUBCLASS 361 / 85
.~.~ Phase

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}
78  DF  .~ With specific quantity comparison means {5}
85.~.~ Phase

DEFINITION

Classification: 361/85

Phase:

(under subclass 78) Subject matter wherein the protective circuitry is activated by a difference in the phases of the compared electrical quantities.

SEE OR SEARCH THIS CLASS, SUBCLASS:

76, for phase sequence sensing to determine a fault.

77, for reverse phase responsive sensing.

SEE OR SEARCH CLASS

324, Electricity: Measuring and Testing,

76.77+, for phase comparison circuits.