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Expired Canadian patentCanada

Five gear torque transfer assembly

CA 1255121 A · Owner: Dana Corporation · Inventors: Dick, Wesley M.

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

A gear assembly for selectively shifting the driving torque in an engine driven vehicle to either a 2 or 4-wheel high mode while in motion, or from a neutral position to a 4-wheel low mode and return. The assembly has five main gears including an input set of two and an output set of three constant mesh gears rotatably mounted in fixed positions and a synchronizer in between the two sets in selective driving association with the output gear set. Selective transfer of torque from the input drive to the assembly to either or both the front and rear output shafts is effected by operation of a single shift rod which in turn moves a single fork both for activation of the synchronizer and 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 June 6, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 6, 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.
FiledFebruary 17, 1986
GrantedJune 6, 1989
Term endedJune 6, 2006
Patent numberCA 1255121 A
Classification (IPC)B60K17/34 +2 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedFeb 17, 1986Patent grantedJune 6, 1989Term endedJune 6, 2006

Sources & verification

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