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Container and closure

  • US 4,084,717 A
  • Filed: 06/29/1977
  • Issued: 04/18/1978
  • Est. Priority Date: 06/29/1977
  • Status: Expired due to Term
First Claim
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1. A container and closure, wherein said container comprises:

  • a body portion;

    a cylindrical neck portion; and

    a plurality of helical container threads equiangularly spaced about the outside circumference of said neck, said container threads having a ratchet portion at their start ends;

    and wherein said closure comprises;

    a top wall;

    an annular sidewall, downwardly depending from said top wall;

    a plurality of helical closure threads equiangularly spaced about the inside circumference of said side-wall for cooperating with said container threads to achieve tight fitment of said closure on said container, said closure threads being of the same number as said container threads;

    at least one inwardly projecting ratchet tooth separate from each closure thread and adjacent the terminal end of each closure thread for engagement with the ratchet portion of said container thread to prevent removal of said closure from said container while said engagement is maintained; and

    flex means for permitting axial movement of said closure to achieve disengagement of said ratchet tooth from said ratchet portion.

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