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Threaded cap containing additive for containers

  • US 4,832,230 A
  • Filed: 12/15/1987
  • Issued: 05/23/1989
  • Est. Priority Date: 12/15/1987
  • Status: Expired due to Fees
First Claim
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1. In combination, a container element having first and second threaded necks forming openings communicating with the interior of said container, a liquid dispensing element selectively threadedly engaged upon said first neck, and communicating therewith and a threaded charging element selectively engaged upon said second neck, said charging element including:

  • an outer cap element having a planar end wall, a cylindrical internally threaded side wall, a rupturable element having a cylindrical side wall having a first end forming a gasket between said outer cap element and said second neck element, and having a second end defining an annular retaining groove, and a circular bottom wall having a peripheral edge selectively positioned within said groove to form a liquid retaining chamber, said planar end wall having a through opening therein;

    a manually operable plunger having a first end projecting through said end wall, and a second end selectively contacting said bottom wall, and serving to at least partially disengage said wall to permit said charging element to empty the contents thereof into said container element.

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