US PATENT SUBCLASS 137 / 434
.~.~ Float arm operated valve

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.~.~ Float arm operated valve {14}
435  DF  .~.~.~> With valve retarder or cushion means
436  DF  .~.~.~> With flow guide or restrictor {1}
438  DF  .~.~.~> Movable nozzle or inlet terminal
439  DF  .~.~.~> Valve removable from outside container
440  DF  .~.~.~> With U-shaped inlet pipe having terminal valve
441  DF  .~.~.~> With refill pipe
442  DF  .~.~.~> Assembly mounted on and having reciprocating valve element co axial with inlet pipe {2}
445  DF  .~.~.~> With toggle or second lever connected to valve
446  DF  .~.~.~> With interposed cam, gear or threaded connection
447  DF  .~.~.~> Rotary valve element
448  DF  .~.~.~> Pivoted valve
449  DF  .~.~.~> Ball valves
450  DF  .~.~.~> Balanced valves
451  DF  .~.~.~> Flexible valve

DEFINITION

Classification: 137/434

(under subclass 409) Apparatus in which the float responding to variations in liquid level is connected to the flow control means by means of a rod or arm which is pivoted at an end thereof and the arm turns about the pivot during operation.

SEE OR SEARCH CLASS

4, Baths, Closets, Sinks, and Spittoons, appropriate subclasses for water closet tanks and bowls with float controlled valves.

222, Dispensing,

64+, for dispensers with float arm operated valves.

251, Valves and Valve Actuation, 213+, for mechanical movement valve actuators, especially subclasses 231+ for lever type mechanical movements.