Method and apparatus for constant pouring of molten metal into molds
CA 1089625 A · Owner: Hachinohe Smelting Co. Ltd. · Inventors: Koga, Masaharu; Tokunaga, Kouichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for pouring a predetermined amount of molten metal into molds and controlling the change in the amount of the poured molten metal consists in the steps of pouring a predetermined amount of molten metal into molds, measuring a distance between the surface of the molten metal in the mold and a level change detector to obtain an electric signal representative of said distance calculating the difference, between a predetermined reference value and that of the electric signal and producing an output signal of a magnitude and tendency to negate the difference, and operating a control motor in accordance with the output signal for causing a displacement of a needle valve thereby to …
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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 November 18, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 18, 1997.
- 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.