US PATENT SUBCLASS 431 / 9
.~.~ Whirling, recycling material, or reversing flow in an enclosed flame zone

Current as of: June, 1999
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431 /   HD   COMBUSTION

2  DF  PROCESS OF COMBUSTION OR BURNER OPERATION {8}
8  DF  .~ Flame shaping, or distributing components in combustion zone {2}
9.~.~ Whirling, recycling material, or reversing flow in an enclosed flame zone

DEFINITION

Classification: 431/9

(under subclass 8) Processes in which the shaping of the flame or distributing the components includes (1) whirling the combustion components within the combustion zone; or (2) directing removed or burning material towards or into the incoming feed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

115+, for combustion product return structure.

173, for feed projected tangentially to the wall of a circular combustion chamber.