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Expired Canadian patentCanada

Robot welder

CA 1208306 A · Owner: Taylor-Winfield Corporation (The) · Inventors: Challenger, Richard

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

Robot type resistance welder of very large capacity that enables the elctrodes of the welder to be readily adjustable in the welding and retracting strokes and automatically controlled so as to retract when encountering an obstacle - also whereby the degree of retraction of electrode may be selectively controlled and whereby the vertical elevation of the work plane may be varied during, welding in accordance with the contour of the work such as a curved panel. The respective electrodes of the spot welders have supporting arms which are pivotally interconnected together with an operating, air cylinder. An adjustable stop is provided in the air cylinder to adjust the extent of retraction. The …

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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 July 22, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 22, 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.
FiledJune 29, 1984
GrantedJuly 22, 1986
Term endedJuly 22, 2003
Patent numberCA 1208306 A
Classification (IPC)B23K11/30 +1 more

Timeline

Timeline From CIPO dates

1985198719891991199319951997199920012003Application filedJune 29, 1984Patent grantedJuly 22, 1986Term endedJuly 22, 2003

Sources & verification

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