Patent Yard Sign in
Expired Canadian patentCanada

Method of joining metals of different physical properties

CA 1300408 C · Owner: Honeywell Inc. · Inventors: Godfrey, Wayne G.; Elander, Jay C.

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

A method of manufacturing wherein a first metal member is installed into a second metal member is disclosed. The first metal member is punched out of a stock into the second metal member which extrudes a slug. The combination is then placed over a flat surface and a second larger punch is applied to cause the slug to reflow back up into its original structure but with that reflow crimping the first metal member that was punched out into a permanently attached place within the second metal member.

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 May 12, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 12, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 15, 1989
GrantedMay 12, 1992
Term endedMay 12, 2009
Patent numberCA 1300408 C
Classification (IPC)B21D39/03 +1 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedFeb 15, 1989Patent grantedMay 12, 1992Term endedMay 12, 2009

Sources & verification

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