Rotary drum suspended within live-ring
CA 2191998 C · Owner: F.L. Smidth & Co. A/S · Inventors: Petersen, Jorn
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A description is given of a rotary drum (1) as for example a rotary kiln, which is suspended within a live-ring (3) by means of axially extending brackets (7) which are retained by the live-ring (3) and bearing at their , free ends, against retaining elements (5) fixed to the rotary drum in such a , way that the vertical load of the drum (1) relative to the drum shell (1) is transmitted tangentially to the live-ring (3). The brackets (7) are evenly distributed over the circumference of the live-ring (3) fixed to its side faces (3a, 3b). Hereby, the live-ring can be made with a smooth cylindrical inner face without teeth, which, besides being advantageous from an economic perspective, …
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 May 4, 1995 and granted January 11, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 4, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 4, 2017.
- 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.