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Expired Canadian patentCanada

Magnetic device for controlling starting of a single phase induction motor

CA 1162233 A · Owner: Ramirez, Antonio · Inventors: Ramirez, Antonio

CIPO record

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

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Abstract From the Canadian patent

A starter device for a single phase A.C. motor having a main winding and a starting winding disposed for connection to a single A.C. source. This starter device comprises a semiconductor switching device having a control electrode and a transconductive path, such as for example a, triac. This switching device is connected in series with the starting winding and the single A.C. source to energize or disconnect this starting winding. A magnetic detector is disposed between two adjacent poles of the main winding of the stator of the motor and has its axis of detection extending in the direction of the lines of magnetic flux forced out of the two adjacent saturated poles of the main winding …

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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 February 14, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 14, 2001.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 16, 1981
GrantedFebruary 14, 1984
Term endedFebruary 14, 2001
Patent numberCA 1162233 A
Classification (IPC)H02P1/04 +1 more

Timeline

Timeline From CIPO dates

1982198419861988199019921994199619982000Application filedNov 16, 1981Patent grantedFeb 14, 1984Term endedFeb 14, 2001

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