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Expired Canadian patentCanada

Control providing progressive charging in a dual voltage charging system

CA 1317634 C · Owner: Bolle, Donald · Inventors: Bolle, Donald

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

A control for an electrical charging system for selectively connecting two alternators producing charging current at each of six outputs to the output of a first battery and the output of a second battery serially connected to the first battery output. The control comprises a plurality of switchable full wave bridge rectifiers for connecting each of the alternator outputs to one of the first battery output and the second battery output so that the one battery is charged by the alternators. The switchable rectifiers are alternatively switchably connectable to the other battery output so that the other battery is charged by the alternators. The control also includes a switching circuit for …

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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 May 11, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 11, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 22, 1989
GrantedMay 11, 1993
Term endedMay 11, 2010
Patent numberCA 1317634 C
Classification (IPC)H02J7/14

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedSep 22, 1989Patent grantedMay 11, 1993Term endedMay 11, 2010

Sources & verification

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