Device for stabilising the two lower steering arms of a tractor
CA 2284815 C · Owner: Kirschbaum, Kurt · Inventors: Henseler, Heinrich; Kirschbaum, Kurt; Adamek, Wolfgang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a device for stabilising the two lower steering arms 1 of a tractor. The lower steering arms 1 can be actuated by a hydraulically operated power lever 9 and are each associated with a side strut 6 with a first single-acting hydraulic cylinder 7 for stabilising and fixing purposes. A line connection between the first single-acting hydraulic cylinders 7 and the power lever 9 can be effected by a control valve 13. To centre the lower steering arms 1 and set same to a predetermined dimension of spread, even when no implement is attached, the line 14 leading to the second single-acting hydraulic cylinder 10 for the power lever 9 contains a pressure-controlled first …
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 October 5, 1999 and granted July 9, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 5, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 5, 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.