Land vehicles – Wheeled – Running gear
Patent
1989-11-09
1991-09-17
Marmor, Charles A.
Land vehicles
Wheeled
Running gear
180140, 180145, 180 791, B62D 500
Patent
active
050488520
ABSTRACT:
A four-wheel steering apparatus comprises a front wheel steering member for steering front wheels by being displaced according to a movement of a steering wheel, a rear wheel steering mechanism for steering rear wheels, a coupling mechanism for mechanically coupling together the front wheel steering member and an input member of the rear wheel steering mechanism, and a play mechanism provided between an end of the coupling mechanism and the front wheel steering member or the input member or in an intermediate part of the coupling mechanism, the play mechanism effecting transmission of displacement only when a displacement in excess of a predetermined amount is produced in either direction from a position corresponding to a neutral position with respect to the steering angle of the front wheels. The rear wheel s6teering mechanism includes a mechanism for steering the rear wheels according to a movement of the input member and an independent steering mechanism for steering the rear wheels independently of displacement of the front wheel steering member.
REFERENCES:
patent: 4163566 (1979-08-01), Tapp
patent: 4286798 (1981-09-01), Butler et al.
patent: 4589510 (1986-05-01), Duerwald et al.
patent: 4874183 (1989-10-01), Chikuma et al.
patent: 4878556 (1989-11-01), Wells
Chikuma Isamu
Eda Hiroshi
Shimada Satoru
Bompey Mitchell
Marmor Charles A.
Nippon Seiko Kabushiki Kaisha
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