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Closure and container and combination thereof with anti-backoff member

  • US 6,913,157 B2
  • Filed: 02/26/2002
  • Issued: 07/05/2005
  • Est. Priority Date: 02/26/2002
  • Status: Expired due to Term
First Claim
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1. A closure for use with a container having a neck portion and container threading formed thereon, comprising:

  • a top wall;

    an annular skirt depending from the top wall and having closure threading formed on an inner surface thereof configured and arranged to threadably engage the container threading; and

    at least one flexible anti-backoff member extending circumferentially on the skirt in a region of the closure threading and being arranged and configured to deflect and frictionally engage the container threading between the anti-backoff member and the closure threading to resist movement of the closure once secured onto the neck of the container;

    wherein a lead angle of the at least one anti-backoff member is different from a lead angle of the closure threading;

    wherein the at least one anti-backoff member forms an integral extension of a portion of the closure threading.

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