Rotary combine
CA 2103327 A1 · Owner: Tanis, Dale R. · Inventors: Tanis, Dale R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rotor assembly for an axial-flow combine having an anti-wrap blade assembly which acts in combination with an impeller blade assembly to direct material outwardly and rearwardly relative to the longitudinal axis of the rotor assembly. The anti-wrap blade assembly includes a plurality of flights arranged at a foremost end of the rotor assembly in equally spaced relation about the rotational axis of the rotor assembly. Each blade of the anti-wrap assembly has a leading edge lying in a plane extending generally normal to the rotational axis and includes a material engaging surface which has a generally concave shape configuration extending rearwardly from the leading edge of the blade for …
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 November 17, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 17, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 17, 2015.
- 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.