US PATENT SUBCLASS 134 / 19
.~ Including work heating or contact with combustion products


Current as of: June, 1999
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134 /   HD   CLEANING AND LIQUID CONTACT WITH SOLIDS

*  DD  PROCESSES {23}
19.~ Including work heating or contact with combustion products {1}
20  DF  .~.~> Carbon removal (e.g., from engines)


DEFINITION

Classification: 134/19

(under the class definition) Processes in which the work is either (1) contacted by hot products of combustion, or (2) heated in any way other than or in addition to contacting the work with heated cleaning or liquid contact agents.

(1) Note. The use of heated cleaning or liquid contact agents (other than products of combustion) including heating such agents while work is immersed therein, are in other appropriate subclasses of this class.

SEE OR SEARCH THIS CLASS, SUBCLASS:

1, where the heating is done by the application of electrical energy to the work, as by conduction or induction, or by application to the work of radiant energy of particular wave

lengths or wave bands.

4, for processes including melting of the material to be removed.

17, for heating or combined heating and cooling designed to cause significant distortion or deformation of the work. 26+, for sequential application to the work of treating agents of different temperatures.

105, for apparatus combined with heating means.

SEE OR SEARCH CLASS

427, Coating Processes,

223+, for coating combined with contacting the base or the coating with a flame.