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Expired Canadian patentCanada

Model-based fault detection system for electric motors

CA 2260773 C · Owner: Serafettinoglu, A. Hakan · Inventors: Serafettinoglu, A. Hakan; Durakbasa, Osman Tugrul; Duyar, Ahmet

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Abstract From the Canadian patent

the present invention relates to a model-based fault detection system and method for monitoring and predicting maintenance requirements of electric motors. Since the method and system of the present invention is software based and utilizes data obtained from non-intrusive measurements implementation , costs are significantly less than prior art maintenance methods. The system comprises computer means coupled to sensors which provide continuous real-time information of the input voltage and current and motor speed. The system and method utilize a multivariable experimental modeling algorithm to obtain a mathematical description of the motor. The algorithm compares the modeled result …

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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

  • Filed June 20, 1997 and granted September 10, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 20, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 20, 2019.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 20, 1997
GrantedSeptember 10, 2002
Term endedJune 20, 2017
Patent numberCA 2260773 C
Classification (IPC)G01R31/34 +2 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedJune 20, 1997Patent grantedSep 10, 2002Term endedJune 20, 2017

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