Patent Yard Sign in
Expired Canadian patentCanada

Resistance welding electrode cap with a pronounced welding tip

CA 1252518 A · Owner: Scm Metal Products, Inc. · Inventors: Nadkarni, Anil V.; Samal, Prasan K.

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

An improved resistance welding electrode cap adapted to being internally cooled with a flow of coolant has a main body portion with a nose root at one end and an electrical and coolant connection projecting from the other the area of the root being substantially smaller than that of the direct projection of said main body portion a pro-, nounced nose projecting from the root. The whole nose is of dispersion-strengthened copper, as is at least the main body portion. Such cap provides astonishingly improved performance for resistance welding, even of galvanized steel, and particularly of double-sided galvanized cold-, rolled steel sheet.

Read the whole patent

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 11, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 11, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 17, 1985
GrantedApril 11, 1989
Term endedApril 11, 2006
Patent numberCA 1252518 A
Classification (IPC)B23K11/30 +1 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedDec 17, 1985Patent grantedApril 11, 1989Term endedApril 11, 2006

Sources & verification

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