US PATENT SUBCLASS 337 / 105
.~.~.~ With electrical power supply or current control means

Current as of: June, 1999
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337 /   HD   ELECTRICITY: ELECTROTHERMALLY OR THERMALLY ACTUATED SWITCHES

14  DF  ELECTROTHERMALLY ACTUATED SWITCHES {9}
36  DF  .~ With bimetallic elements (i.e., motion takes place in a plane at right angles to its major axis) {10}
102  DF  .~.~ With external or auxiliary heating means {4}
105.~.~.~ With electrical power supply or current control means {1}
106  DF  .~.~.~.~> Inductive means (e.g., transformer)

DEFINITION

Classification: 337/105

(under subclass 102) Subject matter wherein the heater structure includes means whereby the current traversing the heating device is maintained at a value between predetermined limits, is caused to flow at predetermined intervals of time or is caused to flow or to be cut off when certain predetermined conditions occur in the switch device.