Low cost twin bobbin motors and methods for making same
CA 2210161 C · Owner: Steiner, Robert E. · Inventors: Steiner, Robert E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Low cost motors including specifically two pole (1, 51 and 101) and four pole (201 251, 278 , and 301) motors are provided with magnetically conductive stacked laminations (3 and 203) each having a multi-pole portion with a rotor opening (9 and 209) and spaced and adjacent side legs (7 7 and 207, 207) extending from circumferentially spaced areas of said multi-pole portion. Each side leg (7, 7 and 207, 207) terminates in an outer free extremity. The combined stacked laminations (3 and 203) provide stacked and adjacent side legs (7 7 and , 207, 207) in circumferentially spaced areas of stacked multi-pole portions with aligned rotor openings (9 and 209) for receiving a rotor (22 and …
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 26, 1996 and granted January 4, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 26, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 26, 2018.
- 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.