1.-3. Flow control valve for hydraulic regenerative devices

Abstract

This product as shown in figs. 1.1-1.10 is a flow control valve mainly used in hydraulic regenerative devices; this flow control valve is provided with an inlet port for communicating with a hydraulic source, a discharge port for discharging the flow controlled pressure oil to a hydraulic device, a tank port for communicating with a tank, and a control port for communicating with a hydraulic source for control; the parts shown by dotted lines in figs. 1.1-1.7 are not part of the claimed design; this product as shown in figs. 2.1-2.10 is a flow control valve mainly used in hydraulic regenerative devices; this flow control valve is provided with an inlet port for communicating with a hydraulic source, a discharge port for discharging the flow controlled pressure oil to a hydraulic device, a tank port for communicating with a tank, and a control port for communicating with a hydraulic source for control; the parts shown by dotted lines in figs. 2.1-2.7 are not part of the claimed design; this product as shown in figs. 3.1-3.10 is a flow control valve mainly used in hydraulic regenerative devices; this flow control valve is provided with an inlet port for communicating with a hydraulic source, a discharge port for discharging the flow controlled pressure oil to a hydraulic device, a tank port for communicating with a tank, and a control port for communicating with a hydraulic source for control; the parts shown by dotted lines in figs. 3.1-3.7 are not part of the claimed design.

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