US PATENT SUBCLASS 122 / 459
STEAM TREATMENT

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

459STEAM TREATMENT {7}
460  DF  .~> Boilers with superheaters
*  DD  .~> Fire tube boiler {3}
*  DD  .~> Flue boiler {1}
*  DD  .~> Horizontal boiler {1}
*  DD  .~> Water tube boiler {7}
*  DD  .~> Superheater {8}
479.1  DF  .~> Automatic heat regulation of superheater {6}

DEFINITION

Classification: 122/459

(under the class definition) Apparatus and methods for treating steam or vapor, either by superheating or cooling it, or by expanding or compressing it, or by any combination of operations.

SEE OR SEARCH THIS CLASS, SUBCLASS:

487, for superheaters having means for injecting water into the steam.

SEE OR SEARCH CLASS

219, Electric Heating, for electric heating devices for superheating steam.