Polyphase electric machine with prefabricated winding layers
CA 2114219 C · Owner: Hill, Wolfgang · Inventors: Hill, Wolfgang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Known flat winding layers that can be prefabricated and inserted into soft magnetic bodies insufficiently utilize the available space in the grooves and winding overhang of polyphase machines and thus increase the volume and weight of the machine. A new winding design allows high power and force densities to be obtained thanks, to the utilization of the whole available space and are economic, to produce. For that purpose each winding layer (4d) is composed of several conductor lanes (22-24) whose number corresponds to the number of phases. The height of the conductor lanes is reduced at the points (25-33) where they intersect,due to the fact that the conductors are mutually offset, and thus …
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 July 29, 1992 and granted April 30, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 29, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 29, 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.