US PATENT SUBCLASS 137 / 505.3
.~.~.~.~.~ Plural reactor surfaces

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}
505.26  DF  .~.~.~ Reactor surface separated by apertured partition {3}
505.29  DF  .~.~.~.~ Valve stem passes through the aperture {3}
505.3.~.~.~.~.~ Plural reactor surfaces

DEFINITION

Classification: 137/505.3

(under subclass 505.29) Devices wherein the reactor surface is in the form of an expansible chamber having at least two flexible walls.