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Expired Canadian patentCanada

Machine for welding seams in automotive wheel rim blanks

CA 1069986 A · Owner: Grotnes Machine Works · Inventors: Fenci, Vernon R.; Tan, Aujit

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

A welding machine for welding the longitudinal seams in wheel rim blanks which have been rolled into cylinders with the longitudinal edges of each blank forming a longitudinal gap includes a pair of clamping assemblies each having an inside member and an outside member for engaging the inner and outer surfaces, respectively of the, rim blank adjacent the longitudinal edges thereof on opposite sides of the longitudinal gap so as to align the longitudinal edges with each other. At least one of the clamping assemblies is movable relative to the other clamping assembly in a direction transverse to the longitudinal gap so as to permit the longitudinal edges of the rim blank to be pressed against …

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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 January 15, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 15, 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.
Filed—
GrantedJanuary 15, 1980
Term endedJanuary 15, 1997
Patent numberCA 1069986 A
Classification (IPC)B23K9/02 +1 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJan 15, 1980Term endedJan 15, 1997

Sources & verification

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