US PATENT SUBCLASS 432 / 64
HAVING FLUID CURTAIN AT CHAMBER PORT OR WORK PATH


Current as of: June, 1999
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432 /   HD   HEATING

64HAVING FLUID CURTAIN AT CHAMBER PORT OR WORK PATH


DEFINITION

Classification: 432/64

(under the class definition) Apparatus including structure by which a stream of fluid is directed to sweep across an opening of a heating or combustion chamber to hinder or prevent entry or discharge of gases through the opening.

SEE OR SEARCH CLASS

110, Furnaces,

179, for a solid fuel furnace having a fluid screen for one of its openings.

454, Ventilation,

188+, for a building having a door or window provided with a fluid curtain.