Plastic bottle cap having foil neck seal
CA 1290281 C · Owner: Cap Snap Co. · Inventors: Bullock, Joseph J. Iii
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
To resist tampering with the contents of containers a, plastic cap is provided with a foil liner. When the cap is seated on the container neck, the foil is caused to be sealed across the neck. To inhibit the foil from coming loose from the cap before closure a circumferential groove is formed in the inside of the skirt wall immediately below the cap top disc. The outer edge of the foil snaps into the groove but does not remain in the groove when the cap is removed for dispensing contents. A tab is formed extending out from the edge of the foil to be gripped by the consumer to remove the foil. This tab is folded over when the tab and cap are intact.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted October 8, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 8, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.