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Expired Canadian patentCanada

Speed reducer

CA 1107535 A · Owner: Volvo Motor Graders Limited · Inventors: Dickie, Ira A.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

The present invention discloses a speed reducer or multiplier for use in a motor grader. The unique structure of the reducer allows the device to be easily inserted in the drive train of a grader and thereby improve the feasible ground speeds at which the grader can operate satisfactorily. The structure further allows the speed of the planetary reduction system to remain idle when not in use. Thereby increasing the efficiency and decreasing problems such as wear. This is accomplished by a shifting mechanism which causes at least two gears to be engaged or disengaged.

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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 25, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 25, 1998.
  • 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 24, 1979
GrantedAugust 25, 1981
Term endedAugust 25, 1998
Patent numberCA 1107535 A
Classification (IPC)F16H3/44 +1 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedAug 24, 1979Patent grantedAug 25, 1981Term endedAug 25, 1998

Sources & verification

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