US PATENT SUBCLASS 34 / 428
.~ Cooling by gas or vapor contact

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


34 /   HD   DRYING AND GAS OR VAPOR CONTACT WITH SOLIDS

282  DF  PROCESS {24}
428.~ Cooling by gas or vapor contact {4}
429  DF  .~.~> Including conveyor {3}
433  DF  .~.~> Gas or vapor flow to top and bottom of treated material
434  DF  .~.~> Gas or vapor flow to bottom of treated material
435  DF  .~.~> Gas or vapor flow concurrent or countercurrent to treated material flow {1}

DEFINITION

Classification: 34/428

Cooling by gas or vapor contact:

(under subclass 282) Process wherein the temperature of the treated material is lowered by passing a gas or vapor in contact with the material.

(1) Note. Apparatus for cooling only by contacting a gas or vapor with the material is classified in the appropriate apparatus subclass below and cross-referenced here.

SEE OR SEARCH THIS CLASS, SUBCLASS:

391, and apparatus subclasses 6+, for cooling combined with drying.

402, for cooling by application of a vacuum.