US PATENT SUBCLASS 122 / 449
.~.~.~ Solid fuel

Current as of: June, 1999
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122 /   HD   LIQUID HEATERS AND VAPORIZERS

*  DD  REGULATION {2}
*  DD  .~ Fuel and water {2}
*  DD  .~.~ Automatic control {1}
449.~.~.~ Solid fuel

DEFINITION

Classification: 122/449

(under the class definition) Devices for automatically controlling the combustion of solid fuel and the regulation of the water feed to boilers, depending upon the conditions within the boiler. This is accomplished either by steam pressure or the temperature of the water or steam.

SEE OR SEARCH CLASS

110, Furnaces,

103, and 188 for boiler controlled fuel feeders.