A ring for swaging and method of fabricating it
CA 2113586 C · Owner: Calmettes, Lionel · Inventors: Michel, Andre; Calmettes, Lionel; Detable, Pascal
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A ring for swaging constituted by a rolled-up length of metal strip whose two ends are bonded together without give rise to significant increased thickness in the bonding zone. The ends of the strip (1) are disposed substantially in contact with each other via their terminal edges (4a, 5a), and the thickness of each of said ends is close to half the thickness of the strip. The inside faces of the ends are offset outwardly relative to the inside surface of the ring so as to constitute a housing (11) for a plate (8) whose thickness is close to half the thickness of the strip. A set of complementary studs (6, 7) and holes (9 10) is provided, on the ends of the strip and on the plate said …
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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 January 17, 1994 and granted January 8, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 17, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 17, 2016.
- 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.