Sliding gate device for a vessel containing molten metal
CA 2247294 A1 · Owner: Bitouzet, Jean-Philippe · Inventors: Bitouzet, Jean-Philippe; Breynaert, Jacques; Bellanger, Gilbert
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 sliding gate device for a vessel containing a molten metal. It comprises a stationary body (18, 20) defining an internal chamber (26) with an upstream wall and a downstream wall, each of said walls being provided with an opening, and said openings being opposite one another, as well as a sliding gate (28) movably mounted in said chamber and provided with at least one through-hole between its main surfaces. The sliding gate is guided by said chamber and a clearance is provided between the main sliding gate surfaces (28a, 28b) and the inner chamber wall. First and second means (40, 42) are provided for generating gas pressure in said chamber to provide a sealing gas …
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 February 26, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 26, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 26, 2019.
- 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.