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Expired Canadian patentCanada

Bearing bushing with seal

CA 1086809 A · Owner: West & Son (Engineers) Limited · Inventors: Brown, John E.

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

A bush for reception on a shaft or in a bore and being capable of rotation relative to the shaft or bore has a body portion at least one axial end of which is provided with an annular sealing formation. The axial cross-sectional shape of the or each formation is such that upon axial compression the inner peripheral surfaces of the formation are caused to move radially inwardly or outwardly respectively.

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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 September 30, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 30, 1997.
  • 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 26, 1978
GrantedSeptember 30, 1980
Term endedSeptember 30, 1997
Patent numberCA 1086809 A
Classification (IPC)F16C33/74 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedMay 26, 1978Patent grantedSep 30, 1980Term endedSep 30, 1997

Sources & verification

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