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Expired Canadian patentCanada

Adapter for control of gas flow to a gas-constricted arc nozzle or the like

CA 1269722 C · Owner: Gartland, Thomas J. · Inventors: Gartland, Thomas J.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

The invention contemplates an adapter for easily converting existing gas metal arc welding apparatus to serve the relatively elevated gasflow requirements of a gas-constricted arc nozzle. The adapter makes it possible to utilize a shop-air or other high-capacity source of pressurized gas, in substitution for a conventional gas cylinder and in making the substitution the existing solenoid valve and its controls remain without change except that the solenoid valve becomes the control for, pilot operation of a main valve forming part of the adapter.

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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 May 29, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 29, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 9, 1987
GrantedMay 29, 1990
Term endedMay 29, 2007
Patent numberCA 1269722 C
Classification (IPC)F16K31/38 +2 more

Timeline

Timeline From CIPO dates

1988199019921994199619982000200220042006Application filedApril 9, 1987Patent grantedMay 29, 1990Term endedMay 29, 2007

Sources & verification

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