US PATENT SUBCLASS 118 / 622
.~.~ Hollow or reentrant work surface interiorly coated

Current as of: June, 1999
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118 /   HD   COATING APPARATUS

620  DF  WITH MEANS TO APPLY ELECTRICAL AND/OR RADIANT ENERGY TO WORK AND/OR COATING MATERIAL {4}
621  DF  .~ Electrostatic and/or electromagnetic attraction or projection of coating material to work {6}
622.~.~ Hollow or reentrant work surface interiorly coated

DEFINITION

Classification: 118/622

(under subclass 621) Coating apparatus specialized or peculiarly adapted to apply a coating to the inner or concave surface of a cavity, bore, depression, or hole in the work.

(1) Note. A patent which includes in the claims a recitation of relationship between the shape of the work and the coating apparatus may be placed in this subclass; in the absence of such recitation the patent will be classified elsewhere based on other features and cross-referenced here if the disclosure warrants.

SEE OR SEARCH THIS CLASS, SUBCLASS:

254, and see the notes thereto for other coating apparatus for applying a coating to the inside of a hollow article.