Patent Yard Sign in
Expired Canadian patentCanada

Electrical connector

CA 1234605 A · Owner: Skaigh Engineering Ltd. · Inventors: Torr, Fred; Adshead, Leslie T.

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 electrical connector for use in arc welding comprises a magnet of generally toroidal shape housed in a cup-shape support and secured by a screw to a casing having a surrounding annular face substantially coplanar with the end face of the magnet and the rim of the cup-shape support. The magnet is made from a material incorporating a high proportion of cobalt having a low temperature coefficient which, is resistant to high temperatures and substantially unaffected by the high welding current which flows therethrough in operation.

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 March 29, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 29, 2005.
  • 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 20, 1985
GrantedMarch 29, 1988
Term endedMarch 29, 2005
Patent numberCA 1234605 A
Classification (IPC)B23K9/32 +1 more

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedJune 20, 1985Patent grantedMarch 29, 1988Term endedMarch 29, 2005

Sources & verification

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