US PATENT SUBCLASS 392 / 463
.~.~.~ With timer controlled energization

Current as of: June, 1999
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392 /   HD   ELECTRIC RESISTANCE HEATING DEVICES

*  DD  HEATING DEVICES (CLASS 219 SUBCLASS 200) {11}
441  DF  .~ Tank or container type liquid heater {4}
449  DF  .~.~ Line connected tank {4}
463.~.~.~ With timer controlled energization {1}
464  DF  .~.~.~.~> Off-peak power

DEFINITION

Classification: 392/463

With timer controlled energization:

(under subclass 449) Subject matter wherein the line connected tank includes means for automatically or manually connecting a source of current or power at regular predetermined times of the day or for predetermined intervals of time.

SEE OR SEARCH CLASS

99, Foods and Beverages: Apparatus,

327, for automatic control or heating means utilizing timers.

165, Heat Exchange,

262, and 266+ for time or program actuators for such systems.

219, Electric Heating,

492+, for automatic power supply, current regulation or current control devices for heaters in general under the class definition and utilizing cycling or timing means. 236, Automatic Temperature and Humidity Regulation,

46, for control devices with timing element.

237, Heating Systems,

2+, for automatic control apparatus which may comprise timing means.

368, Horology: Time Measuring Systems or Devices,

appropriate subclasses for regulating times.