US PATENT SUBCLASS 137 / 505.19
.~.~.~ Liquid level responsive gas flow control

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

455  DF  LINE CONDITION CHANGE RESPONSIVE VALVES {11}
494  DF  .~ With separate connected fluid reactor surface {8}
505  DF  .~.~ With opening bias (e.g., pressure regulator) {13}
505.19.~.~.~ Liquid level responsive gas flow control

DEFINITION

Classification: 137/505.19

(under subclass 505) Devices in which the reactor surface is a liquid transferable between plural chambers and in which the valve is actuated by means responsive to the variation of liquid level in one chamber.