Vacuum duct for bottom unloading of storage bins
CA 2236645 A1 · Owner: Brooks, Keith · Inventors: Gammel, Tim; Brooks, Keith
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is a vacuum duct for bottom unloading of particulate material storage bins. The, device consists of a duct running along the floor of the bin either above or , below the bin floor, with a number of unloading openings operatively connecting the duct and the storage cavity. A vacuum unit is attached to one end of the duct and there is a vacuum airstream inlet at or near, the opposite end of the duct. By opening one or more of the unloading openings and allowing, air to enter the duct through the vacuum airstream inlet a conventional grain , vacuum or other vacuum device can be used to evacuate the contents of the bin from the bottom. The vacuum, airstream inlet might be …
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 5, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 5, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 5, 2020.
- 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.