US PATENT SUBCLASS 137 / 157
.~.~ Gas pressure controlled by amount of liquids in boiler or discharge receiver

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}
157.~.~ Gas pressure controlled by amount of liquids in boiler or discharge receiver {1}
158  DF  .~.~.~> Pressure connection at liquid level in boiler or discharge receiver

DEFINITION

Classification: 137/157

(under subclass 156) Feed-traps wherein the application of gas pressure is controlled by the amount of liquid in the discharge receiving receptacle, as the boiler.

SEE OR SEARCH THIS CLASS, SUBCLASS:

130+, for siphon discharge controlled by the receiver.

205, for liquid filling by evacuating a container and see the search notes thereto.

SEE OR SEARCH CLASS

141, Fluent Material Handling, With Receiver or Receiver Coacting Means,

39+, for diverse fluid containing pressure filling systems wherein the filling means is controlled by the gas condition in the receiver. 222, Dispensing,

56, for automatic dispensing controlled by the quantity in a discharging receiver.