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Expired Canadian patentCanada

Power control system for electrically driven vehicle

CA 1138540 A · Owner: Bolger, John G. · Inventors: Bolger, John G.

CIPO record

Overview

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

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Abstract From the Canadian patent

Abstract of the Disclosure, An electrically driven vehicle having suitable batteries to drive the vehicle on conventional roads and a pickup receiver thereon for receiving power for a drive motorfrom a conductor embedded in a prepared roadway for driving the vehicle and for charging the batteries. The pickup receiver is supported on the vehicle so that it establishes a small air gap with the conductor for operation on a specially prepared roadway. On some vehicles the pickup receiver may be lowered to the proper position for operation on the special roadway and then raised to provide sufficient clearance to accommodate normal obstacles, such as driveway gutters when, the vehicle is driven …

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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 December 28, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 28, 1999.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 27, 1979
GrantedDecember 28, 1982
Term endedDecember 28, 1999
Patent numberCA 1138540 A
Classification (IPC)B60L15/00 +1 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedApril 27, 1979Patent grantedDec 28, 1982Term endedDec 28, 1999

Sources & verification

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