US PATENT SUBCLASS 137 / 446
.~.~.~ With interposed cam, gear or threaded connection

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}
446.~.~.~ With interposed cam, gear or threaded connection

DEFINITION

Classification: 137/446

(under subclass 434) Apparatus in which the connection between the float arm and the valve controlled thereby comprises a cam or gear or a screw thread type mechanical motion.

SEE OR SEARCH THIS CLASS, SUBCLASS:

447, for a rotary valve element screw threaded to the float arm, no motion of the valve relative to the valve casing resulting from the screw arrangement.

SEE OR SEARCH CLASS

251, Valves and Valve Actuation,

213+, for mechanical movement valve actuators.