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Expired Canadian patentCanada

Engine room-cooling control system

CA 1304480 C · Owner: Honda Giken Kogyo Kabushiki Kaisha (Also Trading As Honda Motor Co. Ltd .) · Inventors: Katoh, Shuji; Aihara, Yasuyuki; Akiyama, Eitetsu

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

In a cooling control system for controlling cooling of an engine room of an engine a water pump, and/or cooling fans are arranged within the engine room to cool same, and electric motors electrically drive the water pump and cooling fans. A control unit compares a temperature of the engine detected by a temperature sensor with a plurality of different predetermined values, and based upon results of the comparison, controls the electric motors for driving the cooling fans in such a manner that as the detected temperature is higher, the flow rate of cooling air flowing in the engine room is larger. The control unit is operable when abnormality occurs in sensors for sensing operating …

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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 June 30, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 30, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 22, 1988
GrantedJune 30, 1992
Term endedJune 30, 2009
Patent numberCA 1304480 C
Classification (IPC)F01P7/04 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedDec 22, 1988Patent grantedJune 30, 1992Term endedJune 30, 2009

Sources & verification

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