Tamper indicating closure having a rotary seal
CA 2014709 C · Owner: Rexam Medical Packaging Inc. · Inventors: Montgomery, Gary V.; Beck, Terry E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A closure including a standard threaded cap having a tamper indicating band depending, from the cap skirt by frangible webs. The tamper indicating band has an inwardly directed bead, which cooperates with a flange on the container neck which allows the band to rotate with the cap, but prevents the band from being removed past the container flange. Alternatively the tamper, indicating band contains spaced ratchet teeth which engage ratchet teeth on the container neck to, prevent further rotation. A rotary seal is provided between the cap and container neck which is, effective for an axial length A greater than the sum of a distance B between the cap bead and the, container flange when …
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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
- Filed April 17, 1990 and granted August 31, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 17, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 17, 2012.
- 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.