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Expired Canadian patentCanada

Radial friction bearing assembly

CA 1234403 A · Owner: Arcomac S.A. · Inventors: Karhola, Arvo; Griner, Walter; Lehtinen, Jukka

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

The invention provides a radial friction bearing assembly particularly for rotatably mounting the rolls of a paper or textile material processing machine which will give a, stable rotational movement without any vibrations and ensures that always an uninterrupted lubrication film is available, even at very low rotational speeds. A preferred embodiment of the bearing assembly comprises a stationary shaft member and an annular sleeve member rotatably mounted on the shaft member. The latter one comprises on its outer surface a plurality of equidistantially arranged longitudinal grooves which extend parallelly to the axis of the shaft member. A plurality of trapezoidally shaped recesses or …

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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 March 22, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 22, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 4, 1985
GrantedMarch 22, 1988
Term endedMarch 22, 2005
Patent numberCA 1234403 A
Classification (IPC)F16C17/02 +1 more

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedApril 4, 1985Patent grantedMarch 22, 1988Term endedMarch 22, 2005

Sources & verification

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