US PATENT SUBCLASS 392 / 478
.~.~ Fluid conveying tube or pipe comprising resistive heating element

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}
478.~.~ Fluid conveying tube or pipe comprising resistive heating element

DEFINITION

Classification: 392/478

Fluid conveying tube or pipe comprising resistive heating element:

(under subclass 465) Subject matter wherein the flow path through the fluid heater is formed by a conduit made of an electrically resistive material having at least two points thereon connected to a source of electricity whereby the conduit itself comprises the resistive heating means for heating the fluid.

SEE OR SEARCH CLASS

137, Fluid Handling,

341, for heating or cooling of the system by electric heating element.

138, Pipes and Tubular Conduits,

33, for thawing and freeze protection by electricity.

219, Electric Heating,

547, for particular material to be heated. 222, Dispensing,

146.1, for heating or cooling means.