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Container-closure arrangement

  • US 4,378,895 A
  • Filed: 12/21/1981
  • Issued: 04/05/1983
  • Est. Priority Date: 01/27/1981
  • Status: Expired due to Term
First Claim
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1. A container-closure arrangement comprising a plastics material container and a plastics material closure therefor;

  • the container having a lip incorporating a radially inwardly directed bead which defines an opening to the container, and the closure comprising a central portion which locates within the container opening and a rim portion which engages the container lip when the closure is fitted to the container;

    the rim portion of the closure including an inner skirt which locates within the lip of the container, the inner skirt having a radially outwardly projecting ledge which normally engages with an undercut below the container bead, and the inner skirt being formed with a portion which depends below the ledge and which flares downwardly and radially inwardly to merge with the central portion of the closure;

    the flared portion of the closure incorporating a zone having a section thickness which is less than that of the adjacent portions of the closure whereby the closure will tend to deform predominatly in such zone in the event that the closure is subjected to an impact force, and the zone of reduced section thickness being disposed generally on an imaginary line which extends upwardly and outwardly at an acute angle to the longitudinal axis of the container.

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