Method of coupling profile wall thermoplastic pipes
CA 2355804 A1 · Owner: C & S Intellectual Properties, Llc · Inventors: Campbell, Steve
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method is disclosed for forming a substantially flush joint or coupling between two profile, wall thermoplastic pipes. The method comprises removing substantially all of the helical rib and, inner wall of a first pipe for a distance from an end of the first pipe and removing a portion of the, helical rib for a distance from an end of a second pipe. By so doing the , outer wall of the second pipe, can be deflected radially inward and the end of the second pipe can thereby be coupled with the first, pipe by overlapping the outer walls adjacent the ends of the first and second pipes, with the outer wall, of the first pipe being on the exterior. When overlapped the second walls of , both …
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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 August 24, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 24, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 24, 2023.
- 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.