US PATENT SUBCLASS 122 / 469
.~.~.~ Rear of firebox

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

459  DF  STEAM TREATMENT {7}
*  DD  .~ Horizontal boiler {1}
*  DD  .~.~ Superheater {2}
469.~.~.~ Rear of firebox

DEFINITION

Classification: 122/469

(under subclass 459) Subject matter comprising superheaters located at the rear of the firebox or back of the bridge wall of miscellaneous boilers extending horizontally. The boiler is generally of the horizontal cylindrical type.

SEE OR SEARCH THIS CLASS, SUBCLASS:

464, for general combination of superheater with horizontal fire tube boilers.

481, for superheaters located in the firebox.