US PATENT SUBCLASS 220 / 203.27
.~.~.~.~ One-way, outwardly venting 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}
203.27.~.~.~.~ One-way, outwardly venting pressure relief valve

DEFINITION

Classification: 220/203.27

One-way, outwardly venting pressure relief valve:

(under subclass 203.23) Device wherein the vent or valve provides for flow of the pressure medium in only one direction.