Three-way bleed type proportional electromagnetic valve

Details Three-way bleed type proportional electromagnetic valve Three-way bleed type proportional electromagnetic valve

2006-05-02

2006-05-02

Krishnamurthy, Ramesh (Department: 3753)

Fluid handling

Systems

Supply and exhaust

C251S129150

Reexamination Certificate

active

07036525

ABSTRACT:
A bleed-type proportional electromagnetic valve having an input port, output port, and ejection port is disclosed. Fluid force and pressing force, proportionate to an output pressure and a current flowing in a solenoid coil respectively, act on a bleed valve for controlling the output pressure, whereby the valve can obtain an output pressure commensurate to the flowing current by displacing the valve to a position that those forces counterbalance, wherein the valve is provided with a stop valve disposed so as to be in sliding contact with a passage between the input and output port, and in contact with or separated from a valve seat. This enable the stop valve to contact with the valve seat so as to close the input port and communicate the output port with the ejection port when controlling the output pressure to be minimum.

REFERENCES:
patent: 5109886 (1992-05-01), Takata et al.
patent: 6619616 (2003-09-01), Sudani et al.
patent: 6827102 (2004-12-01), Weber
patent: 6874533 (2005-04-01), Weber
patent: 2002-286152 (2002-10-01), None

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