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Expired Canadian patentCanada

Bending apparatus

CA 1317159 C · Owner: Abb Ab · Inventors: Dorsett, Michael W.

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 apparatus for bending a margin flange (5) which projects at an angle to a surface on a workpiece (4) against this surface. The apparatus includes a bending tool (6) which is mounted on a tool holder (7) which is connected to a stand (1) by means of a linkage mechanism (8-13). The stand carries the workpiece (4) and a drive arrangement (15-24) which is connected to the tool holder (7) in a manner to move the tool holder in relation to the stand (1). According to the invention the linkage, system connecting the tool holder (7) with the stand (1) includes two mutually parallel carrier links (8. 11) one, end of each of which is pivotally mounted on a respective journal …

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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 4, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 4, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 14, 1989
GrantedMay 4, 1993
Term endedMay 4, 2010
Patent numberCA 1317159 C
Classification (IPC)B21D5/16 +1 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedMarch 14, 1989Patent grantedMay 4, 1993Term endedMay 4, 2010

Sources & verification

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