Steered wheel angle sensor using hydraulic flow to steering cylinder
CA 2425313 A1 · Owner: Deere & Company · Inventors: Rekow, Andrew Karl Wilhelm; Nelson, Frederick William; Adams, Lawrence J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention disclosed is a steering system providing steered wheel angle sensing for vehicles having a spaced pair of steered wheels a two-way, hydraulic steering cylinder operatively connected to the steered wheels, and a hydraulic circuit connected to the cylinder. The invention includes a hydraulic two-way valve, a hydraulic pump for supplying fluid under pressure to the circuit and being hydraulically connected to the valve, the cylinder having a single moveable shaft therein to move, in opposite directions to steer the wheels in one of two angular directions a, hydraulic motor in the circuit between the cylinder and the valve, an output shaft on the motor adapted to rotate in one of …
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 April 14, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 14, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 14, 2025.
- 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.