Process and device for forming electrodes in a spot welding gun or the like
CA 2073426 C · Owner: Abb Ab · Inventors: Mattsson, Karl-Erik
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a process and a device for dressing truncated conical tips of electrodes (1, 2) in a spot welding gun press or the like. According to the process each electrode tip is dressed , both on its truncated conical lateral surface (1a 2b) and, on its end surface (1b, 2b). In a first machining step the electrode tip is , inserted into a cavity in a first tool (20 21) for machining, the lateral surface (1a 2a) or the end surface (1b, 2b) until the other of these two surfaces comes into contact with an abutment whereafter the electrode tip in a second machining step is inserted into a cavity in a second tool (21, 20) for machining the end surface (1b, 2b) or the lateral …
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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 January 10, 1991 and granted November 27, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 10, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 10, 2013.
- 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.