Extendible auger
CA 1137915 A · Owner: Togstad, Frank A. · Inventors: Togstad, Frank A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An extensible grain auger includes a casing defined by coaxial telescoping sections, with an inlet at one end and an outlet at the other end of the casing, a pair of interconnected auger tubes rotatably mounted in the casing, the flight of one tube being threadable into the auger flight of the other tube; and an extension tube and screw assembly rotatably mounted in the auger tubes, the extension tube extending out of the casing at one end and the screw being connected to a nut in the tube and to the other end of the casing, so that one casing section can be extended and retracted relative to the other casing section.
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 December 21, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 21, 1999.
- 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.