US PATENT SUBCLASS 220 / 203.05
.~.~.~.~ Having rotatably adjustable closure which places vent or valve in operative position

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}
203.04  DF  .~.~.~ Manually adjustable {2}
203.05.~.~.~.~ Having rotatably adjustable closure which places vent or valve in operative position {1}
203.06  DF  .~.~.~.~.~> Rotation of closure causes actuation of vent or valve

DEFINITION

Classification: 220/203.05

Having rotatably adjustable closure which places vent or valve in operative position:

(under subclass 203.04) Device wherein means are provided to prevent functioning of the vent or valve, said means being adjustable through rotation of the closure about the opening of a receptacle to place the vent or valve in a venting position.