Superior liner
CA 2443809 A1 · Owner: Cyr, Gerard L. · Inventors: Cyr, Gerard L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A liner for a Mig welding gun is a consumable round tube or coil shaped extension spring, inserted inside a Mig Welding gun designed to stop the wear of the expensive Mig, Welding gun while simultaneously reducing the friction or drag of the Mig Welding, consumable wire as it passes through the Mig Welding gun. The first 3 to 6 feet of the, Mig welding liner is normally encapsulated in a shrink-wrap plastic coating to help direct, the flow of the Mig Welding shielding gas. There are several different inside diameter, shapes and materials of liner surface that the Mig Welding wire rides on in an attempt to, facilitate these requirements but they are all closed tube extension coil …
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
- Filed June 5, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 5, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 5, 2025.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.