Dual stator winding connection
CA 2086185 C · Owner: Herzog, Gordon William · Inventors: Herzog, Gordon William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed a dynamoelectric machine having a dual stator winding comprising a pair of windings each connected in a three phase star configuration from a respective neutral. The three phases of each of the pair of windings are normally displaced from each other by 30 electrical degrees. The improvement includes first and second terminals at the midpoint of each of the three phases of each of the pair of windings which terminals are normally connected to each other. This allows the dynamoelectric machine to be connected to a twelve pulse LCI source. Alternatively the first terminal of each three phase windings may be connected to the second terminal of its corresponding phase winding …
Read the whole patent
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 23, 1992 and granted November 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 23, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 23, 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.
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.