Linerless closure
CA 1286252 C · Owner: Moore, David N. · Inventors: Moore, David N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A linerless closure for use in sealing plastic bottles and jars is disclosed. The linerless closure has a series of concentric annular sealing rings for sealing contact with a bottle mouth. A ridge located between an inner and outer sealing flange provides for a minimum of two sealing surfaces and a maximum of three sealing surfaces with a bottle mouth. A buttress flange spaced inwardly of the inner sealing flange provides additional strength to the inner sealing flange for guiding an irregular bottle mouth to a sealing engagement.
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 July 16, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 16, 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.