US PATENT SUBCLASS 110 / 305
.~.~.~ Bridgewall
Current as of:
June, 1999
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110 /
HD
FURNACES
297
DF
INCLUDING NONCOMBUSTIBLE FLUID SUPPLY MEANS
{3}
301
DF
.~ Having treatment means {2}
302
DF
.~.~ Preheater {5}
305
.~.~.~ Bridgewall
DEFINITION
Classification: 110/305
Bridgewall:
(under subclass 302) Apparatus further provided with a hollow
barrier structure located at the rear of the fire grate attached to the preheater such that the heated fluid enters the combustion reaction from barrier structure.