Motor vehicles – Including one or more ski-like or runner members – With at least one surface-engaging propulsion element
Patent
1987-09-29
1989-05-09
Marmor, Charles A.
Motor vehicles
Including one or more ski-like or runner members
With at least one surface-engaging propulsion element
180148, 180154, 280 91, B62D 504
Patent
active
048280623
ABSTRACT:
A motor-operated power steering apparatus for a vehicle with steerable front and rear wheels comprises a front wheel steering mechanism for turning the front wheels, the front wheel steering mechanism comprising a rack shaft having opposite ends adapted to support the front wheels through knuckle arms, respectively, a rack casing adapted to be fixed to a body of the vehicle, the rack shaft being axially movably supported by the rack casing, a rear wheel steering power output mechanism disposed substantially centrally on the rack shaft for extracting rear wheel steering power from the rack shaft, a pinion shaft operatively coupled to an end portion of the rack shaft in the rack casing through an operative coupling mechanism in a rack-and-pinion configuration for transmitting manual steering forces applied from a steering wheel, an electric motor disposed coaxially on the rack shaft between the rear wheel steering power output mechanism and the operative coupling mechanism for generating assistive steering power, and a ball screw mechanism extending parallel to the rack shaft remotely from the electric motor for axially moving the rack shaft in response to the assistive steering power generated by the electric motor. The motor-operated power steering apparatus also includes a rear wheel steering mechanism for turning the rear wheels, and a connecting shaft coupled to the rear wheel steering power output mechanism for transmitting rear wheel steering power from the front wheel steering mechanism to the rear wheel steering mechanism.
REFERENCES:
patent: 4173265 (1979-11-01), Kremer
patent: 4415054 (1983-11-01), Drutchas
patent: 4646867 (1987-03-01), Kanazawa
patent: 4683971 (1987-08-01), Westercamp
patent: 4715461 (1987-12-01), Shimizu
Diederiks, Jr. Everett G.
Honda Giken Kogyo Kabushiki Kaisha
Marmor Charles A.
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