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Expired Canadian patentCanada

Parallel redundant and load sharing regulated ac system

CA 1058703 A · Owner: Hase, Alfred M. · Inventors: Hase, Alfred M.

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Abstract From the Canadian patent

Abstract of the Disclosure:, An electrical power system is provided having two power sources, one being a commercial power source and the other being an inverter. Both power sources are connected to the load so as to share the load, approximately equally. A voltage regulator is in series with the commercial power source and the inverter is synchronized to the commercial power source. Means are provided for failure sensing and isolation of the inverter; and means are associated with the voltage regulator which is connected in series with the commercial power source to block and sense reverse power flow in a direction from the load towards the first power source and to initiate isolation of …

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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 17, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 17, 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—
GrantedJuly 17, 1979
Term endedJuly 17, 1996
Patent numberCA 1058703 A
Classification (IPC)H02J3/38

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedJuly 17, 1979Term endedJuly 17, 1996

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