US PATENT SUBCLASS 392 / 479
.~.~ Externally heated line connected section

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

*  DD  HEATING DEVICES (CLASS 219 SUBCLASS 200) {11}
465  DF  .~ Continuous flow type fluid heater {12}
479.~.~ Externally heated line connected section {4}
480  DF  .~.~.~> Pipe or tube forms flow path {1}
482  DF  .~.~.~> Plural pipes or tubes form flow path
483  DF  .~.~.~> Heating element producing radiation
484  DF  .~.~.~> Block forms flow path

DEFINITION

Classification: 392/479

Externally heated line connected section:

(under subclass 465) Subject matter wherein the fluid heating device comprises means defining a closed flow path having an inlet and an outlet, an electric resistance heating element externally of the flow path arranged to heat the fluid flowing therethrough, and means at the inlet and outlet of the flow path for coupling the heating device into a fluid flow line as a part thereof.

(1) Note. The heating element may be secured or coupled in any heat conductive manner to the external surface of the heated line section.

SEE OR SEARCH THIS CLASS, SUBCLASS:

396, for in continuous flow line connected vaporizer.

473, for fluid heater carried on discharge member.

SEE OR SEARCH CLASS

126, Stoves and Furnaces, 344+, for water heaters.

137, Fluid Handling,

340+, for circulation fluid in heat exchange relationship.

138, Pipes and Tubular Conduits,

32+, for thawing and freeze protection.

219, Electric Heating,

535, for a pipe to be heated.

222, Dispensing,

146.1+, for molten metal dispensing with heating.

431, Combustion,

208, for electrically heated section.