Cleaning duct for vacuum cleaning of storage bins
CA 2237501 A1 · Owner: Gammel, Tim · Inventors: Brooks, Keith; Gammel, Tim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a device which can be used to evacuate remnant grain or other, particulate material from the floor of storage bins. The device consists of a cleaning duct which, is rotatably and operatively attached to an unloading duct at a point on a planar bin floor. There, is a material inlet which runs along the edge of the cleaning duct in close proximity to the bin, floor. A power vacuum device is attached to the unloading duct at a point outside of the bin and, as the cleaning duct is rotated about its attachment to the unloading duct the material inlet, moves along the bin floor and loose grain or other stored material can be vacuumed up through, the cleaning duct and …
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 12, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 12, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 12, 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.