US PATENT SUBCLASS 34 / 513
.~.~ Heat conserving

Current as of: June, 1999
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34 /   HD   DRYING AND GAS OR VAPOR CONTACT WITH SOLIDS

282  DF  PROCESS {24}
443  DF  .~ Gas or vapor contact with treated material {17}
513.~.~ Heat conserving {1}
514  DF  .~.~.~> Exhaust gas or vapor from treatment zone heats treating gas or vapor {1}

DEFINITION

Classification: 34/513

Heat conserving:

(under subclass 443) Process including steps for preserving heat.

(1) Note. This may be done in any way, as by exchanging heat between incoming and outgoing gas and vapor or by burning the discharged gas or vapor and using the evolved heat.

SEE OR SEARCH THIS CLASS, SUBCLASS:

86, for apparatus for other modes of heat conservation, and see the notes there.

427, for other modes of heat conservation.