Closure and/or control member for the tapping of liquid metal melt from a metallurgical vessel
CA 1340550 C · Owner: Didier-Werke Ag · Inventors: Gimpera, Jose; Bruckner, Raimund
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a closure and/or control means for the tapping of liquid metal melt on a metallurgical vessel with a fixed refractory member and a refractory member which is sealingly movable relative to it in rotation and/or linearly, the two refractory members being provided with a respective circular cylindrical sealing surface and the two sealing surfaces being sealingly fitted within one another. In order to ensure that in operation the free movability of the two refractory members with respect to one another is always maintained without the metal melt infiltrating into the vicinity of the annular gap between the two sealing surfaces it is proposed that the coefficients of …
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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 May 18, 1999. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 18, 2016.
- 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.