Combined linear-rotary stepping motor
CA 2135817 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 combined linear-rotary stepping motor shares stator iron plates and mover iron cores for a linear motor portion and a rotary motor portion without lengthening the length in the shaft direction. The combined linear-rotary stepping motor includes a stator having a stator iron core provided with a plurality of salient poles composed of salient poles having a plurality of first stator teeth formed in inner peripheral surfaces thereof in the direction of a shaft, and salient poles having a plurality of second stator teeth formed in inner peripheral surfaces thereof in the circumferential direction. A mover having mover iron cores is supported within the stator movably in the shaft direction …
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 November 15, 1994 and granted August 11, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 15, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 15, 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.