US PATENT SUBCLASS 337 / 51
.~.~.~ Cyclically or periodically actuated

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}
37  DF  .~.~ With manual or other mechanical contact controlling means {12}
51.~.~.~ Cyclically or periodically actuated

DEFINITION

Classification: 337/51

(under subclass 37) Subject matter including significant details of means whereby a circuit is intermittently or cyclically opened and closed at constantly recurring intervals under the influence of a thermal current responsive bimetallic device.

SEE OR SEARCH THIS CLASS, SUBCLASS:

92+, for electrothermally actuated bimetallic elements directly actuating the movable contact of a switch in a cyclic or periodic manner.

369, for thermally actuated bimetallic, cyclic or periodic type switch.

SEE OR SEARCH CLASS

200, Electricity: Circuit Makers and Breakers,

19.01+, for periodic switches which may include electrothermal elements. 219, Electric Heating,

490+, for heating devices with automatic timing or cycling control means.

236, Automatic Temperature and Humidity Regulation,

46, for automatic temperature control devices with timing means and subclasses 91+ for thermostatic controls which may be cyclic or periodically operative.

307, Electrical Transmission or Interconnection Systems,

132, for electrical switching systems with repetitive operation and subclass 141 for switch operating means with time delay.

315, Electric Lamp and Discharge Devices: Systems,

209+, for systems comprising a lamp or discharge device with a periodic switch in the supply circuit.

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

87+, for electromagnetically actuated periodic switches, for instance vibrators.

340, Communications: Electrical, 914+, for time cycling traffic systems, subclasses 81+ for flashing signal light systems.