US PATENT SUBCLASS 137 / 162
.~.~.~ Gravitating vessel

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.~.~.~ Gravitating vessel {2}
163  DF  .~.~.~.~> Sinking or bucket type float
164  DF  .~.~.~.~> Pivoted vessel with fluid passage through pivot

DEFINITION

Classification: 137/162

(under subclass 159) Feed-traps wherein liquid accumulates in a vessel which lowers by gravity upon the accumulation of a predetermined amount of liquid therein to control the admission of gas pressure.

SEE OR SEARCH THIS CLASS, SUBCLASS:

189+, for separating traps of the gravitating type in diverse fluid containing pressure systems.

408, for liquid level responsive devices of the gravitating tank type, and see the search notes thereto.