US PATENT SUBCLASS 68 / 12.21
.~.~.~ Level or temperature responsive

Current as of: June, 1999
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68 /   HD   TEXTILES: FLUID TREATING APPARATUS

3 R  DF  MACHINES {22}
12.01  DF  .~ Single tub and automatic sequential operation mechanism {14}
12.19  DF  .~.~ Liquid handling {1}
12.21.~.~.~ Level or temperature responsive {1}
12.22  DF  .~.~.~.~> With temperature modification

DEFINITION

Classification: 68/12.21

Level or temperature responsive:

(under subclass 12.19) Subject matter including means responsive to the height of or the hotness of the treating liquid for controlling the flow of the treating liquid.

SEE OR SEARCH THIS CLASS, SUBCLASS:

12.02+, for a liquid level or temperature responsive control device which initiates or terminates a textile liquid treatment step.

SEE OR SEARCH CLASS

137, Fluid Handling,

240, for addition of separate material in an additional cleaning system, subclass 268 for the addition of nonfluid material to a flow system, subclasses 331+ for cyclic or

program type actuation of valves and subclass 387 for fluid level control of a machine for treating nontextile-type material.