Proportional solenoid valve and control method therefor

Details Proportional solenoid valve and control method therefor Proportional solenoid valve and control method therefor

2005-10-25

2005-10-25

Michalsky, Gerald A. (Department: 3753)

Fluid handling

Processes

Involving pressure control

C137S082000, C251S129080, C251S129140

Reexamination Certificate

active

06957656

ABSTRACT:
In a proportional solenoid valve, a cylindrical valve seat member includes an input/output-side passage provided between an input port and a drain port and between an output port and the drain port, a seat portion provided in an end portion of the input/output-side passage, and a drain-side passage provided between the seat portion and the drain port. The drain-side passage is formed by exhaust passage holes whose number is an even number equal to four or more and which are arranged at regular intervals in the circumferential direction of the valve seat member.

REFERENCES:
patent: 5051631 (1991-09-01), Anderson
patent: 5617890 (1997-04-01), Brehm et al.
patent: 5845667 (1998-12-01), Najmolhoda et al.
patent: 6019120 (2000-02-01), Najmolhoda et al.
patent: 2002-525524 (2002-08-01), None

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