High turndown rotary dryer flights
CA 2067792 C · Owner: Beloit Corporation · Inventors: Gobel, Richard J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A dryer drum for drying bulk material including a rotating drum (10) having an inlet (12) for material to be dried at one end and an outlet (13) for dried material at the other end a center shaft (11) extending therethrough vanes (19, 20, 23, 24) mounted, on the shaft (11) circumferentially spaced from each other and axially spaced along the shaft (11) the vanes (19, 20, 23, 24), having a first panel (26) extending substantially in a radial plane parallel to the axis of the shaft (11) a second panel (27), attached to the first panel (26) and facing in a downstream direction and a third panel (29) attached to the second panel (27); wherein the bulk material to be dried moves in sliding …
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 August 20, 1990 and granted September 29, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 20, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 20, 2012.
- 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.