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Expired Canadian patentCanada

Process for holding together the wires of a package bead ring for tires

CA 1204993 A · Owner: Michelin & Cie (Compagnie Generale Des Etablissements Michelin) · Inventors: Bouju, Maurice; Charvet, Jean-Louis

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

During the winding of the layers of the wires of a tire bead ring, a piece of ribbon is interposed at least twice per revolution between two consecutive layers of wires, the ribbon being formed of a thin flexible support bearing on each of its faces a layer of a material which adheres both to the support and to the wires. And a package bead ring for tires manufactured by such process.

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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 May 27, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 27, 2003.
  • 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 17, 1983
GrantedMay 27, 1986
Term endedMay 27, 2003
Patent numberCA 1204993 A
Classification (IPC)B29D30/48

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedMay 17, 1983Patent grantedMay 27, 1986Term endedMay 27, 2003

Sources & verification

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