Process and installation for the electromagnetic casting of rolled bars from an aluminium alloy having a ripplefree surface
CA 2054489 A1 · Owner: Ebener, Michel · Inventors: Constantin, Maurice; Carrupt, Bertrand; Ebener, Michel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
During electromagnetic continuous casting of rolled bars from aluminium/magnesium alloys defects in the form of vertical ripples and oxide deposits arise on the bar surface as a consequence of the greatly increased rate of oxidation at the melt surface due to the presence of magnesium in the melt, which defects make it necessary to mill over the rolled surfaces of the bar in the case of stringent requirements with respect to the surface quality of rolled products. The said surface defects can be prevented using an oxide barrier (26) which dips into the melt head (28) extends at least over the longitudinal sides (x1) of the inductor (12) and is arranged approximately parallel to and at a …
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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 October 29, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 29, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 29, 2013.
- 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.