US PATENT SUBCLASS 431 / 351
.~ Including means feeding air axially spaced points of the flame

Current as of: June, 1999
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431 /   HD   COMBUSTION

350  DF  FLAME HOLDER HAVING PROTECTIVE FLAME ENCLOSING OR FLAME STABILIZING STRUCTURE {2}
351.~ Including means feeding air axially spaced points of the flame {1}
352  DF  .~.~> Axial perforations along combustion tube

DEFINITION

Classification: 431/351

(under subclass 350) Apparatus including means for supplying air directly to burning gases at spaced points along the region of combustion in the direction of flow of the flame as it passes along or through a shield, tunnel, or chamber means.

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10, for processes of adding an oxidizer to a region of incomplete combustion.

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432, Heating,

222+, for air heater that operates by mixing air with combustion gases.