.~ Including means feeding air axially spaced points of the flame {1}
352
.~.~ Axial perforations along combustion tube
DEFINITION
Classification: 431/352
(under subclass 351) Apparatus in which the means for feeding air comprises perforations through the shield, tunnel or chamber and spaced along the line of flow of the burning
gases.
SEE OR SEARCH THIS CLASS, SUBCLASS:
195+, for a fuel distributor underlying a combustion annulus having air feeding perforations.
333+, for a pot type burner which may include perforations in its side wall for feeding air to the interior of the pot; and 341+, for a pot type burner including an exhaust flue having air feed passages.
