US PATENT SUBCLASS 432 / 99
.~.~ Having vertically spaced gas supply ports

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

Internet Version by PATENTEC © 1999      Terms of Use


432 /   HD   HEATING

95  DF  SHAFT TYPE {2}
96  DF  .~ Having combustion products generated in or fed to shaft {5}
99.~.~ Having vertically spaced gas supply ports

DEFINITION

Classification: 432/99

(under subclass 96) Apparatus in which combustion materials are introduced into the work material through ports spaced vertically along the work chamber.

SEE OR SEARCH CLASS

110, Furnaces,

297+, for a mere conventional shaft type furnace with means for feeding air thereto.