US PATENT SUBCLASS 361 / 68
.~.~ With communication between disconnect points

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}
67  DF  .~ Series connected sections with faulty section disconnect {2}
68.~.~ With communication between disconnect points {1}
69  DF  .~.~.~> Pilot wire communication

DEFINITION

Classification: 361/68

With communication between disconnect points:

(under subclass 67) Subject matter wherein communications means sends a coded message between disconnect points indicating that a fault exists.

(1) Note. Some of the most commonly used communication systems are: Current Carrier Systems; Radio Wave Transmitter-Receiver Systems; and Laser Transmitter-Receiver Systems.

SEE OR SEARCH THIS CLASS, SUBCLASS:

64, and 66, for communication circuits in feeder networks.

81, for communication circuits in quantity comparison systems (distance relaying).