Steering device for a hydrostatic-drive vehicle, in particular a

Details Steering device for a hydrostatic-drive vehicle, in particular a Steering device for a hydrostatic-drive vehicle, in particular a

1984-06-19

1985-12-31

Nilson, Robert G.

Motor vehicles

Steering by driving

Independently operable drive motors

91517, 137 87, B62D 1104

Patent

active

045615136

ABSTRACT:
An hydraulic steering device for a crawler-mounted vehicle, in which a couple of pressure-regulating steering valves controls the rotation direction and speed of two respective rolling trains of the vehicle, is described. Each of the valves is provided with an end chamber having a piston sliding therein in response to a control pressure depending on the pilot pressure regulated by the other steering valve, and each piston is designed to shift respective shouldering means for respective contrast springs of respective shuttles provided on the valves in such a manner that both the rolling trains are stopped whenever both of the valves are activated simultaneously.

REFERENCES:
patent: 3154925 (1964-11-01), DeVita
patent: 3717213 (1973-02-01), Roe
patent: 4458485 (1984-07-01), Seelman

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