Cored tubular electrode and method for the electric- arc cutting of metals
CA 1262376 C · Owner: Gamberg, Edward R. · Inventors: Gamberg, Edward R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cored tubular metallic arc electrode is provided for use in the Gas-assisted cutting and gouging of metal substrates the electrode comprises a wrought metal tube and a compacted core composition consisting essentially of particulate reactant metal mixed with an exothermically reactable metal oxide and containing 0 to about 30% by weight of an additive based on the total weight of the core composition, the additive being selected from the group consisting of arc stabilizers fluxing, agents, deoxidizers and gas formers. The particulate reactant metal is characterized by a free energy of formation of its oxide referred to 25°C of at least about 100,000 calories per gram atom of oxygen, 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
- Granted October 17, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 17, 2006.
- 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.