Method of manufacturing an iron core of a multi-phase linear motor
CA 2118341 C · Owner: Oriental Motor Co. Ltd. · Inventors: Satomi, Hirobumi; Iwasa, Takao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of manufacturing an iron core of a multi-phase linear motor having a stator and a mover which are disposed facing each other with an air gap therebetween the stator or mover including a plurality of salient poles disposed along the air gap extending in a direction perpendicular to a moving direction of the mover a, multiplicity of teeth formed on surfaces of the salient poles opposite to the air gap at an equal pitch along the moving direction of the mover, and a stator iron core or mover iron core in which the stator teeth formed in the salient poles or the mover teeth are disposed with a predetermined shift to each other in the moving direction of the mover. The method is …
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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 October 18, 1994 and granted August 4, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 18, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 18, 2016.
- 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.