US PATENT SUBCLASS 4 / 541.4-- .~.~.~ And aerating

US PATENT SUBCLASS 4 / 541.4
.~.~.~ And aerating

Current as of: June, 1999
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4 /	HD	BATHS, CLOSETS, SINKS, AND SPITTOONS

538	DF	TUBS {9}
541.1	DF	.~ Means for agitating or circulating water in a tub {4}
541.3	DF	.~.~ By liquid flow {1}
541.4		.~.~.~ And aerating

DEFINITION

Classification: 4/541.4

And aerating:

(under subclass 541.3) Subject matter wherein the apparatus uses liquid and gas discharged from a pressure source to cause the water within the tub to churn or flow.

(1) Note. The gas may come from a source of pressure or be entrained by the discharged liquid.

SEE OR SEARCH THIS CLASS, SUBCLASS:

541.5, for liquid aerating apparatus for use in a tub.

SEE OR SEARCH CLASS

261, Gas and Liquid Contact Apparatus,

75+, for a device specifically designed to produce an intimate contact between a gas and a liquid that is beyond aeration, and Digest 75 for a device using flowing liquid to aspirate gas.