Motor vehicles – Including one or more ski-like or runner members – With at least one surface-engaging propulsion element
Patent
1984-03-09
1986-02-18
Camby, John J.
Motor vehicles
Including one or more ski-like or runner members
With at least one surface-engaging propulsion element
251 57, B67D 506, F16K 3112
Patent
active
045707375
ABSTRACT:
In a power-assisted rack-and-pinion steering apparatus, axial movements of a helical tooth pinion resulting from a torque being applied thereto cause corresponding displacements of the movable member of a control valve of the apparatus. A piston which moves axially together with pinion defines a sealed chamber of variable volume, which is filled with an incompressible fluid, such as oil or grease. The movable member of the control valve is slidably mounted along an axis different from the pinion axis and is operated by a push-rod having one end surface arranged so as to sense the pressure within the chamber of variable volume. Means are provided for holding the movable member of the control valve in its central neutral position in case the fluid contained within the chamber is lost.
REFERENCES:
patent: 4320778 (1982-03-01), Baumann
patent: 4354422 (1982-10-01), Nishikawa et al.
patent: 4487281 (1984-12-01), Cordiano
Camby John J.
CORINT S.r.l.
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