Auger screw
CA 1206115 A · Owner: 621895 Saskatchewan Ltd. · Inventors: Mcconnell, Allan R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An inlet auger section for a grain auger is formed from six separate half portions each having a half tube integrally carrying two half flights of two separate helical screws. Each half section is manufactured integrally from a plastics material and the half sections co-operate to substantially surround a shaft of the auger and to complete one flight of each of the screws. The two half portions are clamped together onto the shaft by hose clamps which extend around the tube and pass through slots in the screw flights.
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
- Granted June 17, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 17, 2003.
- 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.