US PATENT SUBCLASS 122 / 443-- .~.~.~.~ Open to steam space

US PATENT SUBCLASS 122 / 443
.~.~.~.~ Open to steam space

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

412	DF	FEED HEATERS {17}
441	DF	.~ Steam {1}
442	DF	.~.~ Injected {1}
*	DD	.~.~.~ Superposed {1}
443		.~.~.~.~ Open to steam space

DEFINITION

Classification: 122/443

(under subclass 442) Subject matter comprising closed chambers or receptacles located over a boiler in open communication with the steam space and means for injecting water thereto that it may be heated by contact with the steam before it enters the boiler.

SEE OR SEARCH THIS CLASS, SUBCLASS:

425, and 442, for similar parts.

SEE OR SEARCH CLASS

210, Liquid Purification or Separation,

198.1+, for separating means with means to add a treating material e.g., steam. 261, Gas and Liquid Contact Apparatus, for gas and liquid contact apparatus not limited to heat exchanging.