US PATENT SUBCLASS 337 / 109
.~.~ Contact composition or structure

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}
109.~.~ Contact composition or structure

DEFINITION

Classification: 337/109

(under subclass 36) Subject matter including significant details of contact structure, composition of material or arrangement peculiarly adapted to be operated through the agency of at least one bimetallic electrothermal current responsive element. The structure usually includes adjustment screw or other means whereby the relative position of the contacts may be varied automatically or at the will of an

operator.

(1) Note. For other contact structure or contacts of particular composition employed in devices of this class, see the subclasses listed under SEARCH THIS CLASS, SUBCLASS in subclass 26.

SEE OR SEARCH THIS CLASS, SUBCLASS:

373+, for significant contact structure particularly adapted for use in switches utilizing thermally responsive bimetallic devices.

SEE OR SEARCH CLASS

29, Metal Working, 874+, for processes of mechanical manufacture of electrical contacts.

178, Telegraphy,

79+, for telegraph transmitters with particular contacts and subclasses 101+ for telegraph keys with significant contact means.

200, Electricity: Circuit Makers and Breakers,

275+, for contact structural details.

252, Compositions,

500+, for electrically conductive compositions.

335, Electricity: Magnetically Operated Switches, Magnets, and Electromagnets,

57+, for electromagnetic switches with liquid contacts, subclass 83 for polarity responsive switches with particular contact structure, subclasses 97+ for periodic switches with particular contact structure, subclasses 133+ for particular contact structure or arrangement in multiple contact switches, subclass 154 for vacuum switches with particular contact structure and subclasses 196+ for significant details of the composition of matter or mechanical structure of contact assemblies peculiarly adapted for use in electromagnetic switches.