Hydraulic pressure fluid control system for controlling the disp

Details Hydraulic pressure fluid control system for controlling the disp Hydraulic pressure fluid control system for controlling the disp

1975-07-01

1976-05-04

Wood, Jr., M. H.

Motor vehicles

Including one or more ski-like or runner members

With at least one surface-engaging propulsion element

91434, 91465, B62D 508

Patent

active

039541495

ABSTRACT:
A hydraulic pressure fluid control system for controlling the displacements of a double-acting servo motor wherein a servo assisting valve mechanism comprises in addition to the control pistons for controlling and maintaining the pressures in the working chambers of the servo motor and the coil springs which place a predetermined minimum force to act on the pistons, spring retainers and further coil springs concentric and codirectional with the first coil springs arranged such that upon a movement of the input member of the system, a predetermined threshold force must be met before the input member directly couples with and controls the movements of the control pistons, the biasing of the coil springs and the further coil springs establishing the threshold value.

REFERENCES:
patent: 3917018 (1975-11-01), Strauff
patent: 3922953 (1975-12-01), Strauff

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