US PATENT SUBCLASS 122 / 57
.~.~.~ Alternate smoke return


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

Internet Version by PATENTEC © 1999      Terms of Use



122 /   HD   LIQUID HEATERS AND VAPORIZERS

44.1  DF  FIRE TUBE {11}
51  DF  .~ Horizontal {22}
*  DD  .~.~ Double water firebox {1}
57.~.~.~ Alternate smoke return


DEFINITION

Classification: 122/57

(under subclass 51) Devices having a two-part water firebox or the equivalent thereof, with mechanism for passing the products of combustion from one part of the firebox to the other part, in order that the smoke may be consumed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

60, for similar functions with a different structure.

SEE OR SEARCH CLASS

110, Furnaces,

208+, for similar art.