Electronic welding station with ac and reversible polarity dc outputs
CA 1332446 C · Owner: Gilliland, Malcolm T. · Inventors: Gilliland, Malcolm T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
ELECTRONIC WELDING STATION WITH AC, AND REVERSIBLE POLARITY DC OUTPUTS" Abstract, An electronic welding station suitable for use with a dedicated power supply or for use in a system wherein a plurality of electronic welding stations are powered from a central power supply. The welding station provides for a positive ground mode, a negative ground mode and two AC, output modes of operation. Most components are used for all modes of operation. The main transistor bank (57) and an auxiliary transistor bank (64) are used in an emitter follower configuration for negative ground mode a common emitter, configuration for positive ground mode and, in conjunction, with an inductor/transformer (67) in …
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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 11, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 11, 2011.
- 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.