Motor vehicles – Compensating devices
Patent
1992-07-09
1994-03-01
Mitchell, David M.
Motor vehicles
Compensating devices
180140, 280 91, 475 2, 475 5, B62D 504
Patent
active
052898911
ABSTRACT:
A rear-wheel steering apparatus for a wheeled vehicle has a linkage mechanism for steering a set of dirigible rear road wheels. The steering apparatus includes a planetary gear unit, the carrier of which is adapted as an output element drivingly connected to an input member of the linkage mechanism, a first electric motor, the output shaft of which is drivingly connected to a sun gear of the planetary gear unit, a first electromagnetic brake mechanism arranged to be activated only when the vehicle is travelling at a higher speed than a predetermined speed for restricting rotation of the sun gear, a second electric motor, the output shaft of which is drivingly connected to a ring gear of the planetary gear unit, and a second electromagnetic brake mechanism arranged to be activated only when the vehicle is travelling at a lower speed than the predetermined speed for restricting rotation of the ring gear.
REFERENCES:
patent: 4765425 (1988-08-01), Saito et al.
patent: 4893688 (1990-01-01), Morishita
patent: 5068584 (1991-11-01), Herent et al.
patent: 5131485 (1992-07-01), Io et al.
Patent Abstracts of Japan of JP Appl. 1-291042, vol. 14, No. 91 (M-938) (4034) Feb. 1990.
Patent Abstracts of Japan of JP Appl. 63-6383, vol. 15, No. 381 (M-1162) Sep. 1991.
Mitchell David M.
Pike Andrew C.
Toyota Jidosha & Kabushiki Kaisha
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