Method of and apparatus for covering permanent magnets on motor rotor with cylindrical sleeve
CA 2203055 C · Owner: Kikuchi, Tokio · Inventors: Sasaki, Mamoru; Morii, Kenji; Kikuchi, Tokio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for covering a plurality of permanent magnets on a rotor with a cylindrical sleeve has a movable jig, a holder jig having a plurality of insertion grooves for inserting therein the permanent magnets disposed in grooves of the rotor, the holder jig and the movable jig being pressable partly into an insertion end of the cylindrical sleeve, a plurality of resilient members disposed in the insertion grooves for pressing the permanent magnets against the outer circumferential surface of the rotor, and a presser device for inserting the movable jig together with the rotor and the permanent magnets into the cylindrical sleeve under the guidance of the holder jig. The permanent magnets …
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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 April 18, 1997 and granted December 14, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 18, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 18, 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.