US PATENT SUBCLASS 324 / 522
.~.~ By voltage or current measuring

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


324 /   HD   ELECTRICITY: MEASURING AND TESTING

500  DF  FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS {10}
512  DF  .~ For fault location {10}
522.~.~ By voltage or current measuring {2}
523  DF  .~.~.~> Of an applied test signal
524  DF  .~.~.~> Polarity responsive

DEFINITION

Classification: 324/522

By voltage or current measuring:

(under subclass 512) Subject matter where a fault causes a change or abnormality of a normal condition to produce a voltage drop or a current surge etc., which is detected to locate the fault.

SEE OR SEARCH CLASS

361, Electricity: Electrical Systems and Devices,

56, 57, 65, 91.1+, and 93.1+ for safety and protection of systems and devices which include voltage and current responsive fault sensors. Subclass 187 for voltage or current level condition responsive relay control circuits.