US PATENT SUBCLASS 335 / 7
.~.~ Responsive to plural diverse circuit conditions (e.g., voltage and current)

Current as of: June, 1999
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335 /   HD   ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS

2  DF  ELECTROMAGNETICALLY ACTUATED SWITCHES {30}
6  DF  .~ Automatic circuit-interrupting devices (e.g., circuit-protective devices) {12}
7.~.~ Responsive to plural diverse circuit conditions (e.g., voltage and current)

DEFINITION

Classification: 335/7

(under subclass 6) Subject matter wherein the automatic circuit interrupting device comprises means responsive to plural diverse abnormal circuit conditions such as overload under voltage, etc. Usually the actuating means comprises separate devices each of which responds to a given predetermined condition and is operative either independently or in cooperation with another means. Some examples; (1) plural electromagnets one of which is voltage responsive and one of which is current responsive or (2) overload and underload coils.

SEE OR SEARCH THIS CLASS, SUBCLASS:

35+, for significant trip structure of a combined nature such as magnetic and thermal, for instance.

SEE OR SEARCH CLASS

307, Electrical Transmission or Interconnection Systems,

116, for condition responsive switching systems which may or may not be responsive to a plurality of conditions. 361, Electricity: Electrical Systems and Devices,

1+, and appropriate subclasses, for safety and protection systems and devices which may be responsive to a plurality of conditions in the systems.