Braze welding or tig welding with metal transfer by liquid bridge
CA 2550445 C · Owner: L'Air Liquide, Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude · Inventors: Bertin, Pascal; Revel, Olivier; Opderbecke, Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention pertains to an arc welding process employing a TIG torch equipped with a non-consumable electrode and a consumable filler wire the extremity of the said consumable wire being progressively melted by an electric arc generated between the non-consumable electrode and at least one part to be welded in order to produce molten metal transfer from the wire towards the said part and thus obtain a welded joint. The consumable wire feed is operated at an angle of less than 50° relative to the axis of the electrode. The metal transfer towards the welded joint is effected by liquid bridge in order to maintain permanent contact between the molten metal bath forming the welded joint and …
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 19, 2006 and granted February 4, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 19, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.