Automatic tracking process of the joint bevel for the butt welding of pipes and equipment for the embodiment of the process
CA 2235817 C · Owner: Belloni, Antonio · Inventors: Belloni, Antonio; Di Stefano, Luca
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to an automatic tracking process of the joint bevel for the butt welding of coaxial pipes operating with orbital movements which, allow the deposit of a number of passes of welding material to produce material continuity between these with the formation of a welded joint without "side of lack fusion" defects. The present invention also relates to equipment for the embodiment of the process which substantially consists in continuously observing the electrical parameter values relating to the voltage, current and voltaic arc impedance and comparing these values with sample values fixed and preset in a governing unit, which activates the driving source for the …
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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 May 26, 1998 and granted August 26, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 26, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 26, 2020.
- 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.