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Expired Canadian patentCanada

Protection system for transferring turbine and steam generator operation to a backup mode especially adapted for multiple computer electric power plant control systems

CA 1046141 A · Owner: Westinghouse Electric Corporation · Inventors: Davis, Guy E.

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

An electric power plant including a steam generator and a steam turbine is operated by a control system including two redundant digital computers. Switching circuitry is provided for coupling one of the computers through interface equipment to the steam generator and the turbine and a generator according to programmed computer control. A data link is established between the computers to transfer manual/automatic status and other needed data from the control computer to the standby computer. A system is provided for detecting when certain hardware and software malfunctions have occurred and for responsively transferring control to the standby computer. The standby computer is tracked to the …

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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 January 9, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 9, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJanuary 9, 1979
Term endedJanuary 9, 1996
Patent numberCA 1046141 A
Classification (IPC)F01D17/02 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedJan 9, 1979Term endedJan 9, 1996

Sources & verification

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