US PATENT SUBCLASS 220 / 203.24
.~.~.~.~ Two-way pressure relief valve

Current as of: June, 1999
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220 /   HD   RECEPTACLES

200  DF  CLOSURES {45}
202  DF  .~ With condition responsive vent or valve {1}
203.01  DF  .~.~ Responsive to pressure {10}
203.23  DF  .~.~.~ Spring-biased, axially translating member {2}
203.24.~.~.~.~ Two-way pressure relief valve {2}
203.25  DF  .~.~.~.~.~> Annular sealing member deflects along axis perpendicular to surface
203.26  DF  .~.~.~.~.~> Plural springs bias individual members

DEFINITION

Classification: 220/203.24

Two-way pressure relief valve:

(under subclass 203.23) Device wherein the vent or valve provides for flow of the pressure medium in two or more directions.