Patent Yard Sign in
Expired Canadian patentCanada

Automatic build-up welding machine for track rollers

CA 1330892 C · Owner: Maruma Jyusharyo Kabushiki Kaisha · Inventors: Moriki, Yasumitsu

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

The present invention discloses an automatic buildup welding machine for a track roller, which requires no operator in charge during the welding operation. The apparatus comprises a collision device including a pair of guides and, a swich box connected adjustably in position to a torch the, switch box housing therein a pair of limit switches for inverting motion of the torch and a swing lever positioned between the limit switches.

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 July 26, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 26, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 17, 1989
GrantedJuly 26, 1994
Term endedJuly 26, 2011
Patent numberCA 1330892 C
Classification (IPC)B23K9/04

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedMarch 17, 1989Patent grantedJuly 26, 1994Term endedJuly 26, 2011

Sources & verification

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