Continuous casting of molten metal
CA 2096750 A1 · Owner: Broken Hill Proprietary Company Limited (The) · Inventors: Pollock, Russel William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tundish sliding gate valve and nozzle change-over assembly for use in a continuous caster is disclosed. The assembly comprises a sliding gate valve (9) for controlling the flow of molten metal from a tundish to a continuous casting mould. The sliding gate valve (9) comprises upper and lower fixed plates (11 13) and an, intermediate sliding plate (15) each of the plates having, apertures for molten metal. The assembly further comprises a change-over assembly connected to the lower plate (13) to support a nozzle (7) in the operative position and to move the nozzle (7) into and from the operative position. The change-over assembly comprises a means to bias a nozzle (7) against the …
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 November 21, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 21, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 21, 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.