Multiple consumer hydraulic mechanisms

Motors: expansible chamber type – Plural relatively movable or rigidly interconnected working... – Condition responsive means for modifying working member...

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91531, 60422, F15B 1306, F15B 1120

Patent

active

046178546

ABSTRACT:
A multiple consumer hydraulic device is provided having a pump and at least two consumers, where a multiway control valve throttling in the intermediate positions is located in front of each of these consumers and a hydraulically controlled additional valve is located in the line between the pump and this mulitway control valve and is acted upon in the closing direction by the pressure in front of this multiway control valve and is loaded in the opposite direction by the pressure of the assigned consumer in which case, in order to achieve a load-independent proportioning of the pump stream for both pumps with and pumps without load-sensing, the additional multiway valve is provided with two additional control pressure chambers, of which the one acting in the closing direction is acted upon by the pressure of the one of the consumers carrying the highest pressure, and the oppositely acting additional control pressure chamber is acted upon by the pressure in the delivery line of the pump.

REFERENCES:
patent: 3863448 (1975-02-01), Purdy
patent: 4020867 (1977-05-01), Sumiyoshi

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