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Expired Canadian patentCanada

Windshield wiper drive

CA 1257952 A · Owner: General Motors Corporation · Inventors: Licata, Joseph P.; Kudla, David P.

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

Abstract of the Disclosure A drive for a tandem windshield wiper system including a driver's side wiper blade and a passenger side wiper blade wherein the driver's primary vision area is wiped twice during each tandem stroke or the wiper blades. The drive includes a unidirectional electric motor with a crank arm, a rotatable drive plate connected to the passenger's side wiper blade a, driver's side crank arm connected to the driver's side wiper blade, a transverse drive link connected to the motor crank arm and linearly reciprocated thereby linkage between the drive link and the drive plate operative to convert reciprocation of the drive link to angular oscillation of the drive plate and …

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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 August 1, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 1, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 19, 1986
GrantedAugust 1, 1989
Term endedAugust 1, 2006
Patent numberCA 1257952 A
Classification (IPC)B60S1/24

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedAug 19, 1986Patent grantedAug 1, 1989Term endedAug 1, 2006

Sources & verification

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