Device for hydraulically assisted steering

Details Device for hydraulically assisted steering Device for hydraulically assisted steering

1979-10-24

1981-12-01

Cohan, Alan

Fluid handling

Systems

Multi-way valve unit

13762547, 91375A, B62D 508

Patent

active

043030998

ABSTRACT:
A device for hydraulically assisted steering of a motor vehicle, comprising a steering control member extended by a sleeve, a rotor and a torsion-bar connecting the rotor and the steering control member; the sleeve includes a first group of two pairs of passage means and the rotor includes a second group of two pairs of passage means each passage means of said second group being shaped such that it can communicate with two passage means belonging to two different pairs of said first group, a source of high pressure and a drain being permanently connected to a pair of passage means of one group, respectively, and the edges of passage means of at least one group, directed along the axis of the sleeve, having a non linear profile defined as a function of the characteristic .DELTA.p=f(.theta.) desired.

REFERENCES:
patent: 3033051 (1962-05-01), Reinke
patent: 3807456 (1974-04-01), Colletti

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