US PATENT SUBCLASS 392 / 485
.~.~ Heated line section with heating element internal of flow path

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


392 /   HD   ELECTRIC RESISTANCE HEATING DEVICES

*  DD  HEATING DEVICES (CLASS 219 SUBCLASS 200) {11}
465  DF  .~ Continuous flow type fluid heater {12}
485.~.~ Heated line section with heating element internal of flow path {6}
486  DF  .~.~.~> Plural pipes or tubes form flow path
487  DF  .~.~.~> With jacket for heating element
488  DF  .~.~.~> Pipe or tube forms flow path {1}
490  DF  .~.~.~> Plural heated line sections (e.g., series or parallel, etc.)
491  DF  .~.~.~> With baffle-defined flow path {1}
494  DF  .~.~.~> Block forms flow path

DEFINITION

Classification: 392/485

Heated line section with heating element internal of flow path:

(under subclass 465) Subject matter wherein the fluid heating device comprises means defining a closed flow path having an inlet and an outlet, an electrical resistance heating element disposed in the flow path and 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 part thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:

301+, for borehole type.

320+, for tube or pipe forming flow path.

341+, for fluid heating.

396, for in continuous flow line connected vaporizer.

461, for externally mounted circulation type heater. 468, for pipeline tracing.

473, for fluid heater carried on discharge member.

497, for immersion heater details.

SEE OR SEARCH CLASS

137, Fluid Handling,

340+, for circulation fluid in heat exchange relationship and subclass 185 for gas collecting float.

138, Pipes and Tubular Conduits,

32+, for thawing and freeze protection.