US PATENT SUBCLASS 340 / 568.3
.~.~.~.~ Power cord

Current as of: June, 1999
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340 /   HD   COMMUNICATIONS: ELECTRICAL

500  DF  CONDITION RESPONSIVE INDICATING SYSTEM {6}
540  DF  .~ Specific condition {18}
568.1  DF  .~.~ Article placement or removal (e.g., anti-theft) {9}
568.2  DF  .~.~.~ Signal-carrying conduit between sensor and article (e.g., cable, power cord, or data link) {2}
568.3.~.~.~.~ Power cord

DEFINITION

Classification: 340/568.3

Power cord:

(under subclass 568.2) Subject matter wherein the placement or removal is determined by monitoring the integrity of an electric supply conductor which is physically attached to, or part of, the article and is in signal communication with a

sensor.

(1) Note. Art in this subclass is directed to detecting the removal of an electronic device (e.g., computer or television) by the removal of its power cord from a wall outlet.

SEE OR SEARCH THIS CLASS, SUBCLASS:

538, for condition responsive alarm sending through the power line, and wherein there is no sensing the disconnection of the power cord of the object.

310.01+, for signal over power line.

SEE OR SEARCH CLASS

174, Electricity: Conductors and Insulators, appropriate subclasses for power conductor or cable, per se.