Motor vehicles – Including one or more ski-like or runner members – With at least one surface-engaging propulsion element
Patent
1993-03-29
1994-05-03
Camby, Richard M.
Motor vehicles
Including one or more ski-like or runner members
With at least one surface-engaging propulsion element
180132, 180149, B62D 506
Patent
active
053078950
ABSTRACT:
A power steering system for an automotive vehicle having a rotary steering valve comprising an inner valve member and a surrounding valve sleeve member, the valve members having cooperating valve lands that control pressure distribution to a fluid motor that effects a steering assist, the valve sleeve being connected mechanically to the fluid motor and a driver controlled steering shaft being connected to driven portions of the steering system, fluid pressure reaction pistons in the steering gear assembly providing a reaction force that opposes relative motion of the steering valve members, pressure regulator valve means and vehicle speed sensitive valve means for tailoring the reaction forces to provide an optimum steering assist at all vehicle speeds, and means for providing a detent force that produces a threshold value of steering torque before the onset of power assist.
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Camby Richard M.
Coppiellie Raymond L.
Ford Motor Company
Hurley Kevin
May Roger L.
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