Axle tilt control apparatus for industrial vehicles
CA 2242553 C · Owner: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho · Inventors: Chino, Kenji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved axle control apparatus for industrial vehicles. A multi-movement hydraulic cylinder is provided at each end of a rear axle to couple the rear axle with a body frame. Each cylinder has a pair of oil chambers which are, defined by a piston. The oil chambers of the same cylinder are connected with each other by an oil line. An electromagnetic valve is located in each oil line. When the electromagnetic valves open the lines, oil flow between the chambers of the same cylinders is permitted. This permits the pistons to move. When the electromagnetic valve closes the lines, oil flow between the chambers of the same cylinders is prohibited. This locks the pistons. When the pistons in …
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 July 7, 1998 and granted June 3, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 7, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 7, 2020.
- 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.