US PATENT SUBCLASS 392 / 465
.~ Continuous flow type fluid heater

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

*  DD  HEATING DEVICES (CLASS 219 SUBCLASS 200) {11}
465.~ Continuous flow type fluid heater {12}
466  DF  .~.~> Method
467  DF  .~.~> With hot plate
468  DF  .~.~> Pipeline tracing {1}
470  DF  .~.~> Disposable cartridge, tube or bag forms heated flow path (e.g., blood bag, etc.)
471  DF  .~.~> Combined liquid flow heater and pump unit
472  DF  .~.~> Flexibe (e.g., hose, etc.)
473  DF  .~.~> Fluid heater carried on discharge member {2}
478  DF  .~.~> Fluid conveying tube or pipe comprising resistive heating element
479  DF  .~.~> Externally heated line connected section {4}
485  DF  .~.~> Heated line section with heating element internal of flow path {6}
495  DF  .~.~> Plural different fluids simultaneously heated
496  DF  .~.~> With heat exchange fluid

DEFINITION

Classification: 392/465

Continuous flow type fluid heater:

(under subclass 200) Subject matter under Class 219, ... wherein the heating device comprises a flow path for the uninterrupted flow of fluid, either a liquid or gas, to be heated; an inlet connected to a pressurized source of fluid; and an electric resistance heating element arranged in the fluid flow path for heating the fluid while it uninterruptedly flows through the path.

(1) Note. This subject matter is also known as "in-line fluid heaters", "through flow fluid heaters", and "demand type fluid heaters".

SEE OR SEARCH THIS CLASS, SUBCLASS:

314+, for fluid-in-circuit type heater.

341, for fluid heating by storage means.

357, for fluid heat absorber.

396+, for continuous flow line connected heater for vaporizer.

461, for externally mounted circulation type heater.

SEE OR SEARCH CLASS

4, Baths, Closets, Sinks, and Spittoons,

598, for shower with heating means.

99, Foods and Beverages: Apparatus,

279, for beverage preparing apparatus which may include a continuous flow water heater.

122, Liquid Heaters and Vaporizers, appropriate subclasses for liquid heaters of the continuous flow type.

123, Internal-Combustion Engines,

142.5, and 545-558 for continuous flow heater associated with internal-combustion engine.

126, Stoves and Furnaces,

344, for continuous flow heater associated with stoves and furnaces.

128, Surgery, 203.26+, for means for heating treating agent, respiratory gas, or mixture thereof and subclasses 204.17+ for electrically heated means producing water vapor.

137, Fluid Handling,

334+, for systems with heating or cooling.

138, Pipes and Tubular Conduits,

32+, for thawing and freezing protection.

165, Heat Exchange, appropriate subclasses for continuous fluid heater.

210, Liquid Purification or Separation,

175+, for heater or heat exchanger.

219, Electric Heating,

600+, for inductive heating, note subclass 628 for heat exchange by fluid or liquid; and subclasses 678+ for microwave heating, note subclass 687 for a fluid heater; and subclass 208 for radiator or cooling system.

222, Dispensing,

146.1+, for heating or cooling means.

239, Fluid Sprinkling, Spraying, and Diffusing,

13, for heating or cooling and subclasses 128+ for the system fluid with heating or cooling.

431, Combustion,

219+, for heated line feeds steam to fuel basin area.

D23, Environmental Heating and Cooling; Fluid Handling and Sanitary Equipment,

314+, for heating or cooling.