Variable speed controllable induction motor
CA 1292764 C · Owner: Satake Engineering Co. Ltd. · Inventors: Satake, Toshihiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A variable speed controllable induction motor comprises a single rotor (2) formed in one-piece having different sets of rotor conductive members (7) effective respectively at different speed ranges that is, at least, a set of first conductive members (7A) specifically effective for a lower speed range and a set of second conductive members (7B) specifically effective for a higher speed ranges: a plurality of stators (25,26) disposed side by side surrounding and facing respective portions of said rotor (2); and a phase shifting apparatus (31,32,33,34,35,40A,40B) for producing phase differences on the respective portions of the rotor conductive members (7). The motor can achieve an overall …
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
- Granted December 3, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 3, 2008.
- 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.