Variable feedback steering system

Details Variable feedback steering system Variable feedback steering system

1976-03-11

1977-01-18

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

Manual pump pressurizes fluid to position output motor...

91358R, F15B 1312

Patent

active

040032027

ABSTRACT:
A hydraulic control circuit for the steering system of an articulated vehicle is provided having a first pump means for delivering fluid under pressure and directional control valve means in fluid communication with the first pump means for controlling the direction of flow of the pressurized fluid. A second pump means, responsive to a steering input signal, develops an output indicative of a desired change in vehicle direction. An actuator means is connected to the directional control valve means for controlling the position of the directional control valve means, and said actuator means is in fluid communication with the second pump means so as to receive the output therefrom. A feedback means is placed in fluid communication with the actuator means for developing a feedback signal to counteract the effect of the second pump output, and a means is placed in fluid communication with the feedback means for varying the feedback signal to thereby vary the rate of counteracting the second pump output.

REFERENCES:
patent: 3016708 (1962-01-01), Gordon et al.
patent: 3584537 (1971-06-01), Schulz

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