Bell and hopper for shaft furnaces
CA 2358068 A1 · Owner: Heinrich, Peter · Inventors: Heinrich, Peter; Otremba, Werner; Hille, Hartmut
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 bell and hopper for shaft furnaces especially for , blast furnaces, with a charging bin with a feed tube a rotating chute carrier , with a drive unit and a swiveling chute in the inner of the furnace with drive means arranged outside the housing. The aim of the invention is to provide such a bell and hopper that is less prone to breakdowns and more resistant to wear. To this end, the drive means for the swiveling movement of the chute comprise: at least one motor (7) which drives a toothed ring (9) by means of a pinion (8). Said toothed ring (9) engages with the toothed spindles (11) of at least two spindles (13) that are distributed across the periphery of …
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 December 11, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 11, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 11, 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.