Pipe coupling
CA 2273718 A1 · Owner: M&Fc Holding Company, Inc. · Inventors: Bird, Edwin A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pipe coupling (10) for coupling and sealing adjacent ends of two pipe sections (12, 14) of the same or different outer diameters. The pipe coupling (10) includes an annular sleeve (24) a, pair of annular gaskets (22) and a pair of follower flanges (20) that surround the adjacent ends of the pipe sections (12 14). The, gaskets (22) have inclined front walls (42) that are angled generally complementary to clamping surfaces (28) formed at opposite ends of the sleeve (24). The gaskets further include inclined back walls (52). As the follower flanges (20) are urged toward the opposite ends of the sleeve (24), the inclined back walls (52) of the gaskets (22) cooperate with skirts (32) formed on …
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
- Filed June 8, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 8, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 8, 2021.
- 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.