Rear wheel steering device for a vehicle

Details Rear wheel steering device for a vehicle Rear wheel steering device for a vehicle

1990-11-06

1992-01-28

Marmor, Charles A.

Motor vehicles

Including one or more ski-like or runner members

With at least one surface-engaging propulsion element

280 91, B62D 715

Patent

active

050836285

ABSTRACT:
A rear wheel steering device for a vehicle which is provided with a rear wheel steering shaft which steers rear wheels by its displacement, a neutrally holding means which constantly biases the rear wheel steering shaft to the neutral position, a motor which is linked with the rear wheel steering shaft and changes the steering angle ratio which is a ratio of the rear wheel steering angle to the front wheel steering angle by displacing the rear wheel steering shaft and an oil pressure assist means which assists displacement of the rear wheel steering shaft by the motor by oil pressure force. This device is further provided with oil pressure supply means which supplies oil pressure to the oil pressure assist means and oil pressure control means which, when working the motor at the initial check, controls the oil pressure supply means to make the oil pressure assist means supply oil pressure to the oil pressure assist means before working of the motor.

REFERENCES:
patent: 4730839 (1988-03-01), Miyoshi
patent: 4896737 (1990-01-01), Kanazawa et al.
patent: 4953648 (1990-09-01), Ohmura
patent: 4953652 (1990-09-01), Ohmura et al.

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