US PATENT SUBCLASS 137 / 447
.~.~.~ Rotary valve element

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}
447.~.~.~ Rotary valve element

DEFINITION

Classification: 137/447

(under subclass 434) Apparatus including a valve which rotates on its axis to control the valve part or parts and is connected to the float arm for operation thereby.

SEE OR SEARCH THIS CLASS, SUBCLASS:

446, for valves which rotate only as a means to secure longitudinal valving motion of the valve as by a screw type mechanical movement.

SEE OR SEARCH CLASS

251, Valves and Valve Actuation,

304+, for rotary valves, per se.