Measurement of pipe joint misalignment at weld interface
CA 2302106 A1 · Owner: Carter, Colin Lesly · Inventors: Prentice, Garth Rodney; Siebert, Martin Anton; Carter, Colin Lesly
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of monitoring the alignment of pipes to be welded end to end involves supporting a reference bar extending generally parallel to and , external, of, the pipes so as to span a weld position of which the ends of two pipes are to, be welded, performing measurements of perpendicular distance between the bar and each pipe at two predetermined distances from the end of each pipe determining the thickness of the walls of the pipes determining the slope of , the, exterior of each pipe with respect to the reference bar calculating from the, slopes the difference between the distances from the bar to the outer surface of, each of the two pipes to the weld position so as to provide a …
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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 March 24, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 24, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 24, 2022.
- 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
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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.