Hybrid arc/laser welding with earth contactor position control
CA 2349073 A1 · Owner: Lefebvre, Philippe · Inventors: Fortain, Jean-Marie; Lefebvre, Philippe; Bonnet, Christian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Hybrid welding process using a laser beam and an electric arc to produce a weld bead. The electric arc is established between an electrode connected to a first pole of a current source and at least one workpiece to be welded and connected to a second pole of a current source via at least one electrically conducting earth contactor in contact with the said workpiece to be welded. To obtain effective welding a, contact is made between the earth contactor and the or a workpiece to be welded laterally and/or upstream of the point of impingement of the electric arc on the workpiece(s) to be welded, and considering the direction of formation of the welded joint so as to, balance the forces …
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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 28, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 28, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 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.