US PATENT SUBCLASS 392 / 360
.~.~ Forced air type

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

*  DD  HEATING DEVICES (CLASS 219 SUBCLASS 200) {11}
347  DF  .~ Convection space heater {10}
360.~.~ Forced air type {5}
361  DF  .~.~.~> Heating attachment for fan
362  DF  .~.~.~> Fan with heated blades
363  DF  .~.~.~> Wall mounted
364  DF  .~.~.~> Ceiling mounted
365  DF  .~.~.~> Portable {3}

DEFINITION

Classification: 392/360

Forced air type:

(under subclass 347) Subject matter wherein the means for guiding air to be heated employs a power driven fan, blower, or pump to force the air into contact with the heating element.

SEE OR SEARCH THIS CLASS, SUBCLASS:

379+, for concentrated heated air stream.

SEE OR SEARCH CLASS

126, Stoves and Furnaces,

103, and 110 for hot air furnace with compressed air.

137, Fluid Handling,

340, for systems including apparatus in which the fluid in system circulates in heat exchange relationship.

165, Heat Exchange,

120+, for impeller or conveyor moving exchange material.

219, Electric Heating,

400, for heat energy transfer by convection.

236, Automatic Temperature and Humidity Regulation,

10+, for hot air furnaces.

237, Heating Systems,

50+, for hot air heating systems.

415, Rotary Kinetic Fluid Motors or Pumps, appropriate subclasses for fluid pump.

416, Fluid Reaction Surfaces (i.e., Impeller), appropriate subclasses for impeller.

417, Pumps, appropriate subclasses for pumps.