US PATENT SUBCLASS 337 / 107
.~.~.~ Significant heating element structure or composition

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}
107.~.~.~ Significant heating element structure or composition {1}
108  DF  .~.~.~.~> Arc or spark gap

DEFINITION

Classification: 337/107

(under subclass 102) Subject matter wherein the heating structure includes significant details of a basic heating unit adapted to form an element or a subcombination of a more comprehensive combination and adapted for use in a thermal current switch under the class definition.

SEE OR SEARCH CLASS

29, Metal Working,

610.1+, for processes of mechanical manufacture of electrical resistors, per se.

338, Electrical Resistors, appropriate subclasses for electrical resistors, per se.