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Expired Canadian patentCanada

Elastomeric bearing with modified cylindrical core

CA 2540973 C · Owner: Skf Usa Inc. · Inventors: Mueller, Thomas G.

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

An elastomeric bearing having inner and outer races and a novel core. The novel core has a plurality of resilient laminae and a plurality of nonresilient laminae interleaved with one another. Each of the lamina has an axially inner cylindrical portion of a given diameter an axially outer , cylindrical portion of a greater diameter than the given diameter and lying , between the inner and outer laminae an angled portion joining the axially inner and outer laminae to each other. The laminae are continuous and of one piece. In this way, the elastomeric bearing has comparatively small resistance to torsional movement, but great resistance to both radial and axial movement.

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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

  • Filed July 11, 2005 and granted December 4, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 11, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 11, 2005
GrantedDecember 4, 2012
Term endedJuly 11, 2025
Patent numberCA 2540973 C
Classification (IPC)F16F1/14

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedJuly 11, 2005Patent grantedDec 4, 2012Term endedJuly 11, 2025

Sources & verification

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