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Expired Canadian patentCanada

Inclined rolling stand

CA 1090174 A · Owner: Hoesch Werke Aktiengesellschaft · Inventors: Stamm, Klaus; Den Hartog, Huibert; Stolze, Lutz

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

An inclined rolling stand for reducing a starting material to a pipe or rod, which includes a roll carrier adapted to be driven and to permit a central passage of the material to be rolled. The roll carrier comprises three conical substantially identical and axially adjustable working rolls which are adapted to be driven and are inclined relative to the rolling axis at the same acute angle. The three working axis by 120° and from the rolling axis by short equal minimum respectively comprise a smoothing zone representing a surface of rotation about the axis of the respective working roll. The respective mantle line of the surface of rotation representing the smoothing zone is so concave that …

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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 November 25, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 25, 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.
FiledApril 11, 1978
GrantedNovember 25, 1980
Term endedNovember 25, 1997
Patent numberCA 1090174 A
Classification (IPC)B21B27/02 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedApril 11, 1978Patent grantedNov 25, 1980Term endedNov 25, 1997

Sources & verification

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