Method of high speed gas shielded arc welding
CA 1071715 A · Owner: Nippon Kokan Kabushiki Kaisha · Inventors: Watanabe, Itaru; Tanaka, Jinkichi; Suzuki, Motoaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In the gas shielded arc welding method for a long seam of formed pipe and the like, the improvement is provided wherein a welding voltage-current and shielding gas is established to produce incomplete short circuiting transfer such that the welding arc is maintained and the voltage does not drop to OV as compared with the prior short circuit method in which the arc is interrupted and the voltage drops to V; in this way it is possible to employ high speed welding with, high speeds of more than at least 3m/min especially, 5m/min;, the method also has advantages over the prior spray transfer method where voltage and current are maintained essentially constant but high speed welding is not …
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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
- Granted February 12, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 12, 1997.
- 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.