US PATENT SUBCLASS 220 / 624
.~.~.~ Pressure responsive contour

Current as of: June, 1999
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220 /   HD   RECEPTACLES

600  DF  END WALL STRUCTURE {8}
610  DF  .~ Joint or seam between sidewall and end wall {6}
623  DF  .~.~ Contoured end wall (e.g., curved, corrugated, ribbed, variable thickness, etc.) {1}
624.~.~.~ Pressure responsive contour

DEFINITION

Classification: 220/624

Pressure responsive contour:

(under subclass 623) Receptacle wherein the contoured end wall structure is designed to move outwardly under high internal pressure or inwardly in response to relatively low internal pressure (e.g., vacuum) conditions within the receptacle.

SEE OR SEARCH THIS CLASS, SUBCLASS:

609, for similar subject matter wherein the sidewall and end wall are of one-piece construction.