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Expired Canadian patentCanada

Reversing device for an elongated section member

CA 1267629 C · Owner: Doguchi, Nobushige · Inventors: Nagai, Yoshitaka; Doguchi, Nobushige

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Abstract of the Disclosure, A reversing device for a section member for turning a horizontally placed section member upside-down comprising: a pair of wheels located concentrically and spaced mutually apart, each wheel having an aperture at the center thereof through which a section member can pass; a fixing means located around said aperture in each of said wheels for fixing said section member to said wheel; at least one pair of driving means for rotating said pair of wheels in a synchronized manner; and a control means for restricting the angle of rotation of said pair of wheels to 180 degrees. The device according to the invention enables the continuity of the transfer line for section …

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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 April 10, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 2007.
  • 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 5, 1984
GrantedApril 10, 1990
Term endedApril 10, 2007
Patent numberCA 1267629 C
Classification (IPC)B21D43/11 +2 more

Timeline

Timeline From CIPO dates

19851988199119941997200020032006Application filedJune 5, 1984Patent grantedApril 10, 1990Term endedApril 10, 2007

Sources & verification

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