Steering control system for tracked vehicle
CA 2213729 C · Owner: Straetker, John George · Inventors: Straetker, John George
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A steering control system for a tracked vehicle includes an engine driven variable displacement steering pump which drives a hydraulic motor. The motor drives a differential drive mechanism which drives left and right track drive wheels. An electronic control unit, as a function of steering wheel position vehicle, speed, engine speed, forward/reverse vehicle direction and other parameters, generates a command signal which controls the swashplate of the steering pump. The system operates so that for a given, position of the steering wheel a turn curvature of the vehicle, decreases as vehicle speed increases wherein turn curvature is, inversely proportional to a radius of turn. This is …
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 5, 1997 and granted November 14, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 5, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 5, 2019.
- 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.