A torch device for chemical processes having three axially movable electrodes
CA 2117331 C · Owner: Kvaerner Technology And Research Ltd. · Inventors: Myklebust, Nils; Hugdahl, Jan; Hox, Ketil
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A plasma torch is designed for energy supply for example for chemical processes. The plasma torch comprises at least three solid tubular electrodes (1, 2 and 3) located coaxially inside one another. The electrodes (1, 2, 3) can be moved axially in relation to one another. They are preferably electrically insulated (5 6, 7) , from one another and have connections for electrical power (8, 9, 10). When three electrodes are used the middle electrode (2) is , used as an auxiliary electrode or ignition electrode. It is then coupled with one of the other electrodes (1). The distance to third electrode (3) is adapted to the working voltage in such a way that a jump spark is obtained when 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 December 11, 1992 and granted November 2, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 11, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 11, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.