US PATENT SUBCLASS 220 / 586
.~ Multilayer container

Current as of: June, 1999
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220 /   HD   RECEPTACLES

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

DEFINITION

Classification: 220/586

Multilayer container:

(under subclass 581) Receptacle wherein the container wall has at least one area (e.g., sidewall, end wall, etc.) which comprises a plurality of superimposed layers, plies or laminas.

SEE OR SEARCH THIS CLASS, SUBCLASS:

62.11+, for a container of general utility having a multilayer barrier structure.

592, for a high-pressure-gas tank having a separate reinforcing element.