Motor vehicles – Including one or more ski-like or runner members – With at least one surface-engaging propulsion element
Patent
1984-09-05
1986-11-11
Lazarus, Ira S.
Motor vehicles
Including one or more ski-like or runner members
With at least one surface-engaging propulsion element
180236, 280 91, B62D 506
Patent
active
046217029
ABSTRACT:
In a four-wheel steering apparatus of a vehicle for steering also the rear wheels in conformity with the steering of the front wheels by a steering wheel, a control force for a rear wheel steering device is mechanically taken out from a front wheel steering device and is suitably controlled in the intermediate portion and is transmitted as a steering control force to the rear wheel steering device, whereby the front wheels and the rear wheels are steered in the same direction when the absolute value of the steering angle of the front wheels is less than a predetermined value, and the rear wheels are steered in the direction reverse to the front wheels when the absolute value is greater than the predetermined value. In the intermediate portion, the taken-out control force is divided into a same direction steering control force for steering the rear wheels in the same direction as the front wheels and a reverse direction steering control force for steering the rear wheels in the direction reverse to the front wheels, and the reverse direction steering control force is absorbed and only the same direction steering control force is transmitted to the rear wheel steering device when the absolute value is less than the predetermined value, and the same direction steering control force is absorbed and only the reverse direction steering control force is transmitted to the rear wheel steering device when the absolute value is greater than the predetermined value.
REFERENCES:
patent: 3351147 (1967-11-01), Williamson
patent: 3596730 (1971-08-01), Cecce
patent: 3856102 (1974-12-01), Queen
patent: 4140199 (1979-02-01), Lester
patent: 4223611 (1980-09-01), Dawson et al.
patent: 4295657 (1981-10-01), Sano et al.
patent: 4373603 (1983-02-01), Nelson
patent: 4446941 (1984-05-01), Laurichtnoct
patent: 4483547 (1984-11-01), Furukawa et al.
Chikuma Isamu
Eda Hiroshi
Furutani Shigeki
Kanazawa Hirotaka
Shimada Satoru
Lazarus Ira S.
Mazda Motor Corp.
Nippon Seiko K.K.
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