Auger for particulate materials
CA 2000638 A1 · Owner: Whyman, Andrew David · Inventors: Whyman, Andrew David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An auger assembly for transporting particulate material. The auger assembly comprises a housing a frame to support the housing, and an auger rotatably mounted in said housing. The auger comprises a thermoplastic material helically wrapped around a shaft. The material has a planar portion in contact with said metal shaft and a radially extending flight portion. A motor is connected to the shaft to rotate the auger.
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 October 13, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 13, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 13, 2011.
- 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.