US PATENT SUBCLASS 219 / 492
.~.~.~ Comprising timing or cycling means

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

200  DF  HEATING DEVICES {14}
482  DF  .~ With power supply and voltage or current regulation or current control means {4}
490  DF  .~.~ Automatic regulating or control means {11}
492.~.~.~ Comprising timing or cycling means {1}
493  DF  .~.~.~.~> Electromechanical

DEFINITION

Classification: 219/492

(under subclass 490) Subject matter comprising means whereby the heating element or elements of a heating device may be energized at a particular predetermined time, or for a given interval or time or may be cyclically energized and deenergized and at regular predetermined intervals.

SEE OR SEARCH THIS CLASS, SUBCLASS:

115, for synchronously switched resistance welding systems.

334, for liquid heaters with timing means for power supply or current control means.

SEE OR SEARCH CLASS

99, Foods and Beverages: Apparatus,

327+, and 332+ for automatic control means for cooking devices comprising timing means. 307, Electrical Transmission or Interconnection Systems involving make or break at a predetermined time in a cycle, and

141+, for electrically timed switching systems.

323, Electricity: Power Supply or Regulation Systems.

361, Electricity: Electrical Systems and Devices,

195+, for relay circuits with time delay means.