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Expired Canadian patentCanada

Joint for a pipe provided with a flared end

CA 1259357 A · Owner: Gs-Hydro Oy · Inventors: Sundholm, Goran

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

The invention relates to a joint for a pipe provided with a flared end. An internal supporting surface (4) of a tightening flange (3) makes contact with the outside of the pipe flare (2), a supporting surface (6) of an insert piece (5) makes contact with the inside of said flare (2). In order to improve the grip of the pipe flare (2), the inside of the tightening flange is provided with a rounded shoulder (7) and the insert piece, correspondingly, with a notch (8) whereby de-, formation of the pipe material is achieved in adjustment according to the form of the shoulder (7) of the tightening flange.

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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 12, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 12, 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.
FiledJune 14, 1985
GrantedSeptember 12, 1989
Term endedSeptember 12, 2006
Patent numberCA 1259357 A
Classification (IPC)F16L19/04 +1 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedJune 14, 1985Patent grantedSep 12, 1989Term endedSep 12, 2006

Sources & verification

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