US PATENT SUBCLASS 219 / 241
.~.~.~.~ With thermal control means

Current as of: June, 1999
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219 /   HD   ELECTRIC HEATING

200  DF  HEATING DEVICES {14}
221  DF  .~ Tool or instrument {2}
227  DF  .~.~ Hand-manipulative {4}
240  DF  .~.~.~ With power supply, voltage or current control, or connection and/or disconnection means {1}
241.~.~.~.~ With thermal control means

DEFINITION

Classification: 219/241

(under subclass 240) Subject matter including thermally expansible bars, bimetallic elements, expansible fluids, thermomagnetic elements, thermocouples or other thermal devices which are responsive to the temperature of the tool or instrument to control the voltage or current to the

electrical heating means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

251+, for thermally responsive current control means for heaters used in sole plate type pressure application means.

494+, for thermally responsible voltage or current regulation or control systems which are more complex or comprehensive than a thermally operated switch, per se.

510+, for thermally responsive switches which include expansible solids, fluids and fusible elements.

SEE OR SEARCH CLASS 337, Electricity: Electrothermally or Thermally Actuated Switches, appropriate subclasses for thermal current actuated or thermally responsive switches of the same type found in Class 219,

510+, but not in combination with an electric heating load.