Electrohydraulic pressure regulating valve

Details Electrohydraulic pressure regulating valve Electrohydraulic pressure regulating valve

1996-03-26

1999-03-02

Izaguirre, Ismael

Pumps

Condition responsive control of drive transmission or pump...

Having condition responsive pumped fluid control

F04B 4922

Patent

active

058761845

ABSTRACT:
An electrohydraulic pressure regulating valve comprises a variable orifice disposed between a supply port and a control port and has a fixed size vent orifice disposed downstream of the variable orifice and in parallel with the control port to reduce the flow forces acting on the spool so that the valve is less sensitive to solenoid and spool quality and has improved pressure control capability.

REFERENCES:
patent: 2716946 (1955-09-01), Hardy
patent: 4441686 (1984-04-01), Seyffer
patent: 4699571 (1987-10-01), Bartholomaus
patent: 5127435 (1992-07-01), Takata et al.
patent: 5144881 (1992-09-01), Cakamaz

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