US PATENT SUBCLASS 427 / 587
.~.~ Resistance or induction heating

Current as of: June, 1999
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427 /   HD   COATING PROCESSES

457  DF  DIRECT APPLICATION OF ELECTRICAL, MAGNETIC, WAVE, OR PARTICULATE ENERGY {15}
585  DF  .~ Chemical vapor deposition (e.g., electron beam or heating using IR, inductance, resistance, etc.) {2}
587.~.~ Resistance or induction heating {2}
588  DF  .~.~.~> Silicon or semiconductor material containing coating {1}
590  DF  .~.~.~> Boron, nitrogen, or inorganic carbon containing coating

DEFINITION

Classification: 427/587

Resistance or induction heating:

Processes under 585 wherein resistance or induction heat is employed to effect the coating.

(1) Note. Induction heating involves subjecting a conductive body to a variable electromagnetic field, usually at a frequency lower than that used for dielectric heating. Internal resistance in the conductive body then cause the conductive body to heat up.

(2) Note. Resistance heating involves passing an electric current through a conductive body to produce heat by means of internal resistance.

(3) 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.

SEE OR SEARCH THIS CLASS, SUBCLASS:

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

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.