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Child resistant container-closure assembly

  • US 4,071,156 A
  • Filed: 08/13/1976
  • Issued: 01/31/1978
  • Est. Priority Date: 08/13/1976
  • Status: Expired due to Term
First Claim
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1. A closure for a container having a neck with an access opening therein and means defining a locking rib on the outer surface of the neck interrupted at least at two circumferentially spaced locations to define gaps therein of predetermined differing arcuate dimensions, said closure including a cap having a top, a skirt depending from the outer edge of the top and at least a pair of primary locking lugs projecting radially inwardly from the skirt which in all positions, except one, engage under said locking rib to secure the cap in place, said primary lugs being of an arcuate span and circumferential spacing to register with said gaps in said one position and at least one auxiliary releasable locking lug of a shallower radial projection than said primary lugs engaging under said bead when said cap is in said one position, said auxiliary lug operable to snap over said bead in said one position when said cap is tilted relative to the neck of the container.

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