Agricultural machine component comprising an adjustable ballasting device
CA 2469816 C · Owner: Roibier, Thierry · Inventors: Roibier, Thierry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a working element (5) of an agricultural machine (1) mounted on a substantially horizontal beam (6) by a linking structure (7) comprising at least one upper arm (17) and at least one lower arm (18) the working element (5) being subjected on one hand to a depth control force directed toward the ground and on another hand to a ballasting exerted by a ballasting device (24) comprising at least one spring (25). The working element is remarkable in that the said ballasting device (24) consists of a handle (28) and at least one rack (29) the handle (28) comprising at least two rods (30 31, 32). The purpose of ths invention is to provide an economical ballasting device …
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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 May 17, 2004 and granted February 21, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 17, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 17, 2026.
- 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.