US PATENT SUBCLASS 137 / 505.4
.~.~.~.~.~ Reactor surface is inverted cup (float)

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}
505.38  DF  .~.~.~ Reactor surface closes chamber {3}
505.39  DF  .~.~.~.~ Valve head in inlet chamber {3}
505.4.~.~.~.~.~ Reactor surface is inverted cup (float)

DEFINITION

Classification: 137/505.4

(under subclass 505.39) Devices in which the reactor surface is a bell or inverted cup floating in a liquid seal.