US PATENT SUBCLASS 335 / 40
.~.~.~.~.~ Responsive to or proportional to degree of overload condition

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}
38  DF  .~.~.~ Magnetic {3}
39  DF  .~.~.~.~ With time delay (e.g., thermal) {1}
40.~.~.~.~.~ Responsive to or proportional to degree of overload condition

DEFINITION

Classification: 335/40

(under subclass 39) Subject matter wherein the significant time delay structure includes means responsive to the degree of overload occurring in the controlled circuit. For instance, the device may contain a first magnetic winding or armature actuated instantaneously upon a short circuit occurring and another winding or armature responsive to a continuous overload.

SEE OR SEARCH CLASS

361, Electricity: Electrical Systems and Devices,

94+, for safety and protective systems employing a device having time delay actuating means combined with instantaneous control (e.g., responsive to the extent of the fault).