US PATENT SUBCLASS 220 / 587
.~.~ With weep hole in outer layer

Current as of: June, 1999
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220 /   HD   RECEPTACLES

581  DF  HIGH-PRESSURE-GAS TANK {6}
586  DF  .~ Multilayer container {2}
587.~.~ With weep hole in outer layer

DEFINITION

Classification: 220/587

With weep hole in outer layer:

(under subclass 586) Receptacle wherein the superimposed layers have a gas passage in the outer layer to prevent a build up of excessive pressure between the layers due to a leak in the inner layer of the container.

(1) Note. The gas passage may also facilitate the detection of a leak in the container.