Feed roll assembly for a forage harvester
CA 1091451 A · Owner: Deere & Company · Inventors: Lawrence, Allan K.; Krafka, Jerry L.; Bass, Merlyn D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, Harvested crop material is fed to the cylindrical cutterhead of a forage harvester by a feeding assembly consisting of opposed pairs of upper and lower feed rolls. The two upper rolls are part of an articulated assembly permitting up and down floating movement of the rolls as required to accommodate variations in flow of crop material. The rear or downstream upper feed roll is close to the cutterhead and carried on a pair of opposite radius arms extending rearwardly alongside the cutterhead and pivoted relatively close to the cutterhead axis so that the roll remains close to the cutterhead periphery as it floats. A transverse leveler shaft rigidly couples the …
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 16, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 16, 1997.
- 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.