Four-wheel steering system for vehicle
CA 1269335 C · Owner: Watanabe, Yoshihiro · Inventors: Takatani, Teruhiko; Furutani, Shigeki; Watanabe, Masaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A four-wheel steering system for a vehicle comprises a steering wheel, a front wheel turning mechanism for turning the front wheels in response to operation of the steering wheel, a rear wheel turning mechanism including a rear wheel steering ratio determining circuit for determining the rear wheel steering ratio and an actuator for turning the rear wheels according to the rear wheel steering ratio determined by the rear wheel steering ratio determining circuit. The four-wheel steering system is provided with a road condition sensor for detecting road surface conditions which can weaken the road gripping force of the wheels and a rear wheel steering ratio controller for changing the rear …
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
- Granted May 22, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 22, 2007.
- 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.