US PATENT SUBCLASS 220 / 640
.~ Open end edge reinforcing means

Current as of: June, 1999
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220 /   HD   RECEPTACLES

639  DF  SEPARATE REINFORCING ELEMENT {4}
640.~ Open end edge reinforcing means {3}
641  DF  .~.~> Edge (e.g., rim, lip, brim, etc.) bent or rolled around a reinforcing element
642  DF  .~.~> Edge encompassed by U-shaped reinforcing element
643  DF  .~.~> Molded container including separate edge reinforcing element {1}

DEFINITION

Classification: 220/640

Open end edge reinforcing means:

(under subclass 639) Receptacle wherein the separate reinforcing element is attached adjacent an open end edge of the container to strengthen the container edge.