US PATENT SUBCLASS 137 / 163
.~.~.~.~ Sinking or bucket type float

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

154  DF  DIVERSE FLUID CONTAINING PRESSURE SYSTEMS {7}
156  DF  .~ Gas pressure discharge of liquids feed traps (e.g., to boiler) {3}
159  DF  .~.~ Gas pressure controlled by amount of liquid in trap {3}
162  DF  .~.~.~ Gravitating vessel {2}
163.~.~.~.~ Sinking or bucket type float

DEFINITION

Classification: 137/163

(under subclass 162) Feed-traps wherein the vessel is an open-topped float which floats in liquid and sinks when filled with liquid.

SEE OR SEARCH THIS CLASS, SUBCLASS:

404, for sinking floats in liquid level responsive or maintaining systems, and see the search notes thereto.