Electromagnetic claw-pole rotor
CA 2194792 A1 · Owner: Gec Alsthom Moteurs Sa · Inventors: Mercier, Jean-Charles; Gueraud, Alain; Masson, Andre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
he invention consists of a claw-pole rotor with 2N poles comprising a first part made of a magnetic material (1) which includes an axial hub (2) with a non-driving end (3) and an end (4) with N claws (5) extending axially and equally divided located peripherally, and defining a bearing (6) among them; a second part made of magnetic material (1') that has an opposite polarity to the first magnetic part and the same shape as the latter arranged opposite the first magnetic part (1); each claw of the second part in magnetic material (1') is arranged between two claws (5) of the first part in magnetic material and vice versa; non-magnetic braces (7) placed between the non-driving ends (8) of the …
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 January 9, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 9, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 9, 2019.
- 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.