US PATENT SUBCLASS 110 / 270
.~.~.~ Including air supply means

Current as of: June, 1999
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110 /   HD   FURNACES

267  DF  INCLUDING MEANS TO FEED SOLID FUEL {4}
268  DF  .~ Movable grate {5}
269  DF  .~.~ Endless chain {3}
270.~.~.~ Including air supply means {1}
271  DF  .~.~.~.~> And chain seal {1}

DEFINITION

Classification: 110/270

Including air supply means:

(under subclass 269) Apparatus provided with means for introducing air to the endless chain grate to thereby promote and support the burning of the fuel on the grate.

SEE OR SEARCH THIS CLASS, SUBCLASS:

348, for process of fluid feed.