Laser welding apparatus and method for high temperature gradient cooling alloys
CA 2201309 C · Owner: Progressive Tool & Industries Company · Inventors: Busuttil, Peter L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Metal alloy workpieces (12, 14) are laser welded to one another with a laser head (16) emitting a laser beam (18) and a servo motor (34) is attached to a linkage (36) that imparts oscillatory motion to laser head (16). In operation the laser head (16) and workpieces (12 14) are moved relative to one another at a predetermined velocity along a weld path. The laser beam power is selectively modulated to have an output with a desired frequency and/or amplitude. An oscillating motion of the laser beam (18) is superimposed on top of the relative velocity of movement between the laser head (16) and the workpieces (12, 14) along the weld path such that a rate of cooling of molten metal is …
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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
- Filed July 30, 1996 and granted December 4, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 30, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 30, 2018.
- 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
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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.