Improved bearing assemblies for agricultural implements
CA 2282371 A1 · Owner: Sunflower Manufacturing Company, Inc. · Inventors: Lewallen, Dennis L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Improved bearing assemblies for agricultural implements and in particular flexible frame towed agricultural implements such as plows and the like are disclosed. The bearing assemblies preferably include a bearing formed from ultra high molecular weight polyethylene. The improved bearing assembly includes a flanged cylindrical bearing sleeve adapted for use with a hinge connecting adjacent frame sections of a flexible frame towed agricultural implement. The flanged cylindrical bearing sleeve is positioned within an outer cylindrical metal bearing sleeve which is mounted in the end of a male hinge member in alignment with a pivot pin receiving bore extending therethrough. A pivot pin …
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 September 17, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 17, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 17, 2021.
- 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.