US PATENT SUBCLASS 335 / 35
.~.~.~ Plural trips or combined operating means for single trip (e.g., magnetic with thermal)

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}
21  DF  .~.~ With latch or trip means {6}
35.~.~.~ Plural trips or combined operating means for single trip (e.g., magnetic with thermal) {2}
36  DF  .~.~.~.~> With common structural elements
37  DF  .~.~.~.~> With thermal element comprising magnetic flux source

DEFINITION

Classification: 335/35

(under subclass 21) Subject matter wherein the trip structure contains significant details of more than a single tripping device each one of which is responsive to a different condition or in which each is actuated by means operating upon a different principle. Also devices in which the current in the winding of a magnetic trip device is controlled by a bimetal, or other thermal means, which may be heated in response to current flow are also classified here.

(1) Note. Generally the combination of a magnetic trip with a bimetallic means results in an instantaneous tripping action upon a large surge of current and a time delayed tripping action following a sustained overload.

SEE OR SEARCH THIS CLASS, SUBCLASS:

173, for other electromagnetically actuated switches with plural significant diverse tripping means.

SEE OR SEARCH CLASS

361, Electricity: Electrical Systems and Devices,

1+, for miscellaneous circuit breaker systems, and subclass 114 for safety and protective systems utilizing manual and automatic opening of a breaker.