US PATENT SUBCLASS 220 / 203.06
.~.~.~.~.~ Rotation of closure causes actuation of vent or 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}
203.04  DF  .~.~.~ Manually adjustable {2}
203.05  DF  .~.~.~.~ Having rotatably adjustable closure which places vent or valve in operative position {1}
203.06.~.~.~.~.~ Rotation of closure causes actuation of vent or valve

DEFINITION

Classification: 220/203.06

Rotation of closure causes actuation of vent or valve:

(under subclass 203.05) Device wherein said means to prevent functioning of the vent or valve comprise an element of the receptacle, said means physically engaging the vent or valve upon rotation of the closure about the opening of the receptacle, such that the engagement of the receptacle element with the vent or valve causes the venting or valving function to be performed (e.g., spring-biased plate engaged in bayonet-type groove in mouth of receptacle).