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Expired Canadian patentCanada

Method of forming a socket weld

CA 1103071 A · Owner: Combustion Engineering, Inc. · Inventors: Leach, Pembroke O.; Camp, Vernon W.; Reardon, James E.

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

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Abstract From the Canadian patent

Improved Method of Forming a Socket Weld Abstract, An improved method of forming a socket weld connection between a tubular element and a vessel of the type wherein a recess, having a diameter slightly greater than the diameter of the tubular element is bored into the surface of the vessel the tubular element, is inserted into the recess so as to contact the seat thereof and welding heat is applied externally around the circumference of the tubular element at the intersection of the tubular element with the surface of the vessel. The improvement comprises tapering the seat of the recess from its outer circumference inward at a downward angle with respect to the horizontal of at least 10° …

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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 June 16, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 16, 1998.
  • 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 15, 1979
GrantedJune 16, 1981
Term endedJune 16, 1998
Patent numberCA 1103071 A
Classification (IPC)B23K28/00

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedJune 15, 1979Patent grantedJune 16, 1981Term endedJune 16, 1998

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