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Expired Canadian patentCanada

Non-pneumatic tire with vibration reducing features

CA 1306410 C · Owner: Nybakken, George Hamlin · Inventors: Pajtas, Scott Robert; Nybakken, George Hamlin; Palinkas, Richard Louis

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 non-pneumatlc tire with an annular body of resilient elastomeric material and an outer cylindrical member supported by circumferentially spaced-apart ribs is, provided with four vibration-reducing features. First the, tire has an outer tread surface with a crown radius. Secondly the tread has a pattern with a plurality of circumferential grooves and lateral grooves arranged to reduce uneven contact pressures caused by radial forces carried by the tire's ribs. Thirdly, the spacing of the ribs is randomly varied around the circumference of the tire to broaden a vibration spectrum caused by the ribs and reduce peak vibrations. Fourthly, a wheel rim that supports the annular body is provided …

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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 18, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 18, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 14, 1987
GrantedAugust 18, 1992
Term endedAugust 18, 2009
Patent numberCA 1306410 C
Classification (IPC)B60B5/02

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedMay 14, 1987Patent grantedAug 18, 1992Term endedAug 18, 2009

Sources & verification

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