Spot welding assembly
CA 2432579 C · Owner: Magna International Inc. · Inventors: Gabbianelli, Gianfranco; Malczewski, Victor J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A welding assembly including a welding gun for providing spaced welds on opposite sides of members being welded. The welding gun includes two welding tips (44,48) so that both welds can be formed without moving the gun or the members relative to each other. Preferably one weld tip is connected to a force applying mechanism such as a hydraulic cylinder (30) to clamp the members together and improve the connection between the weld tips and the members. The weld gun can be used for making one or two welds while in the engaged position around the members being welded. Also one of the weld tips , can be replaced with a support that merely provides the force applying function.
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 December 20, 2001 and granted April 26, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 20, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 20, 2023.
- 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.