US PATENT SUBCLASS 137 / 410-- .~.~ Valve opened by external means, closing or closing control by float

US PATENT SUBCLASS 137 / 410
.~.~ Valve opened by external means, closing or closing control by float

Current as of: June, 1999
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137 /	HD	FLUID HANDLING

386	DF	LIQUID LEVEL RESPONSIVE OR MAINTAINING SYSTEMS {11}
409	DF	.~ By float controlled valve {11}
410		.~.~ Valve opened by external means, closing or closing control by float

DEFINITION

Classification: 137/410

(under subclass 409) Apparatus wherein the flow controlling valve is opened by external means and its closing is in response to or is controlled by a float.

SEE OR SEARCH THIS CLASS, SUBCLASS:

389, for float controlled valves having external means either assisting or substituted for the float operation.

456+, for condition change responsive valves which must be reset by external means.

SEE OR SEARCH CLASS

4, Baths, Closets, Sinks, and Spittoons,

381+, for tank outlet valves which are latched open and released by a float. 251, Valves and Valve Actuation,

15+, for apparatus for flush type valves which are opened by external means, the closing being delayed or controlled by fluid pressure operated member, and subclasses 66+ for biased trip valves which are not released or reset by condition responsive means.