Patent Yard Sign in
Expired Canadian patentCanada

Device for controlling heater for motor vehicle

CA 1301727 C · Owner: Isuzu Motors Limited · Inventors: Kawamura, Hideo

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

A device controlling a heater or warmer on an automobile has a charger for charging, with an external commercial electric power supply, a battery which serves as a power supply for energizing an atomizing glow plug which heats and atomizes fuel, an igniting glow plug which ignites the fuel as atomized by the atomizing glow plug and blowers. The device also has a driver for driving the blowers with electric power produced by rectifying the power from the commercial electric power supply. The glow plugs of a high power requirement are energized by the battery even while the automobile is at rest and the, battery is charged by the charger. The blowers are driven by electric power produced by …

Read the whole patent

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 May 26, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 26, 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 8, 1987
GrantedMay 26, 1992
Term endedMay 26, 2009
Patent numberCA 1301727 C
Classification (IPC)B60H1/22 +1 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedDec 8, 1987Patent grantedMay 26, 1992Term endedMay 26, 2009

Sources & verification

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