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Expired Canadian patentCanada

Electrically commutated motor having an edgewise wound yoke

CA 1330882 C · Owner: Forbes, Franklin Lee · Inventors: Harms, Harold Barnard; Forbes, Franklin Lee

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Abstract of the Disclosure, A method of fabricating a salient pole electronically commutated motor with the salient pole electronically commutated motor including a lanced strip of generally thin ferromagnetic material. The lanced strip is formed into a generally annular edgewise wound yoke section for the salient pole electronically commutated motor, and a set of salient poles are established on the edgewise wound yoke section being disposed about preselected pitch axes so as to extend generally outwardly from the edgewise wound yoke section, respectively.

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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

  • Granted July 26, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 26, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 24, 1986
GrantedJuly 26, 1994
Term endedJuly 26, 2011
Patent numberCA 1330882 C
Classification (IPC)D06F37/30 +2 more

Timeline

Timeline From CIPO dates

198719901993199619992002200520082011Application filedOct 24, 1986Patent grantedJuly 26, 1994Term endedJuly 26, 2011

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.