Hydrostatic steering device

Details Hydrostatic steering device Hydrostatic steering device

1989-11-27

1991-10-15

Look, Edward K.

Power plants

Pressure fluid source and motor

Expansible chamber type volumetric responsive measuring...

60387, 60422, 60450, 91516, 91517, 91532, 180132, F16D 3102

Patent

active

050563114

ABSTRACT:
A hydrostatic steering device is provided with a pump connected with a reservoir, a steering valve, a controlled-volume pump that is capable of being activated by a steering wheel and with a steering cylinder. The steering mechanism has a variable working flow and a constant pilot flow, with the pilot stream flowing through a constant throttle and the pressure drop through the constant throttle serving as a control signal for the conveying flow in a pressure delivery line. The controlled-volume pump is coupled mechanically with an adjustment throttle through which the pilot flows. Between the constant throttle and the adjustment throttle lies a pressure compensator that is controlled by the adjustment throttle's differential pressure. To receive the load signal, a control line branches off between the constant throttle and the pressure compensator and leads to the pump or, in the case of a fixed displacement pump with a rear-position flow-dividing valve, to the flow-dividing valve.

REFERENCES:
patent: 4011721 (1977-03-01), Yip
patent: 4332303 (1982-06-01), deMaight
patent: 4553389 (1985-11-01), Tischer et al.
patent: 4685295 (1987-08-01), Christiansen et al.

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