Feeding and distributing device for rotary platforms, particularly for rotary-hearth furnaces
CA 2269977 A1 · Owner: Demag Italimpianti S.P.A. · Inventors: Grattarola, Giancarlo; De Marchi, Giovanni
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Device for feeding and distributing loose material to rotary platforms, particularly for rotary-hearth furnaces, comprising material feed means (2, 3), material transfer means (304) and a material gravity-pour duct (4); the said device comprises static means for the differentiated distribution of the material, the said means comprising the distribution front (214) of the pouring duct (4) which has an essentially curvilinear profile the, derivative of this curve being an increasing linear function of the radius of the rotary platform (10) in the portion lying between the centre of the platform and its perimeter.
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 April 22, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 22, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 22, 2021.
- 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.