US PATENT SUBCLASS 137 / 439-- .~.~.~ Valve removable from outside container

US PATENT SUBCLASS 137 / 439
.~.~.~ Valve removable from outside container

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}
434	DF	.~.~ Float arm operated valve {14}
439		.~.~.~ Valve removable from outside container

DEFINITION

Classification: 137/439

(under subclass 434) Apparatus in which the valve controlled by the float is removable from outside the container holding the liquid accumulation.

(1) Note. In the arrangements classifiable in this subclass the valve is usually removable for replacement or repair purposes, the float means and linkage remaining in the tank.

SEE OR SEARCH THIS CLASS, SUBCLASS:

315+, for apparatus including repair or assembling means, especially subclass 326 for valve removal through the interior of a tank, and see the search notes to subclasses 315 and 326.