Storage bin for particulate materials
CA 2281970 C · Owner: Epp, Richard J. · Inventors: Epp, Dwayne S.; Epp, Richard J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A grain storage bin has a circular bin floor structure and a cylindrical bin wall upstanding from the floor. A bin aeration system includes a perforated air discharge tube mounted diametrically across the bin supported on a frame above the floor from one side with an air supply duct for supplying air from a fan through the wall. The floor structure is divided diametrically into two separate half sections. A discharge duct extends from a feed opening at a center of the bin horizontally under the horizontal support surface to a discharge outside the wall of the bin with a belt having an upper run along the duct. An alternative discharge includes a discharge duct extending from a feed opening …
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 September 7, 1999 and granted August 20, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 7, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 7, 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.