(under subclass 305) Coating apparatus in which the coating device traverses and is supported by the inner surface of a cavity or hole within the confines of the work being coated.
(1) Note. In this subclass may be found, for example, devices for applying a coating of cement to the inner surfaces of pipes, which devices have wheeled carriages carrying the projector, the carriage running along the inner surface of the pipe while spraying the inner surface with the cement material; except that inclusion of trowel means defines a molding apparatus. See the Search Notes below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
317, for nontraversing devices for applying a coating to the inside of a hollow workpiece by means of a projector.
SEE OR SEARCH CLASS
425, Plastic Article or Earthenware Shaping or Treating: Apparatus, for a molding apparatus including a trowel means.
