US PATENT SUBCLASS 165 / 154
NON-COMMUNICATING COAXIAL ENCLOSURES


Current as of: June, 1999
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165 /   HD   HEAT EXCHANGE

154NON-COMMUNICATING COAXIAL ENCLOSURES {2}
155  DF  .~> With communicating coaxial enclosure
156  DF  .~> Helical conduit means


DEFINITION

Classification: 165/154

(under the class definition) Apparatus including structure forming two chambers having a common axis and which do not unite.

SEE OR SEARCH THIS CLASS, SUBCLASS:

141, for concentric flow chambers in a means providing heat interchange of three noncommunicating fluids.

SEE OR SEARCH CLASS

181, Acoustics,

282+, for a jacket or casing, per se, for a muffler.

220, Receptacles, 592.05, 592.23, 592.24, 495.01+, 23.9, and 23.91 for a metallic receptacle with a spaced wall or jacket not specialized by structure to heat exchange.