US PATENT SUBCLASS 427 / 592
.~ Resistance heating

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

Internet Version by PATENTEC © 1999      Terms of Use


427 /   HD   COATING PROCESSES

457  DF  DIRECT APPLICATION OF ELECTRICAL, MAGNETIC, WAVE, OR PARTICULATE ENERGY {15}
592.~ Resistance heating {2}
593  DF  .~.~> Vapor deposition employing resistance heating of substrate or coating material
594  DF  .~.~> Immersion or partial immersion

DEFINITION

Classification: 427/592

Resistance heating:

(under subclass 457) Processes wherein an electrical current is passed through the coating material or substrate to produce heat by means of internal resistance.

(1) Note. This subclass does not include processes wherein the electric current is passed through a heating filament, coil, susceptor, etc., which is not the substrate or the coating material.

(2) Note. This subclass excludes indirect heat transfer to the substrate or coating material as via convection heat.

SEE OR SEARCH THIS CLASS, SUBCLASS:

248.1, for processes involving direct heating of an evaporation pot, boat, or crucible containing coating material using resistance energy with the intent to vaporize said coating for application to a substrate.

540, wherein an arc or electrical discharge is produced in resistance heating to effect coating.

580, wherein an arc or electrical discharge is produced in resistance heating to effect coating. SEE OR SEARCH CLASS

219, Electric Heating,

73.11, 73.21, and 76.1+ for metal coating buildup with the use of resistance heating. Electric welding has to have two preforms being joined, wherein coating is ancillary to the joining of the preforms.