Electromagnetically actuated valve system and valve device

Details Electromagnetically actuated valve system and valve device Electromagnetically actuated valve system and valve device

Filed on

2006-05-16

Date issued

2006-05-16

Examiner

Douglas, Steven O. (Department: 3751)

Patent Class

Valves and valve actuation

SubClass

Fluid actuated or retarded

SubSubClass

Pilot or servo type motor

Other Related Categories

C137S596140, C137S596160, C137S596180

Type

Reexamination Certificate

Status

active

Patent number

07044431

Description

ABSTRACT:
The invention relates to a valve system comprising a housing, an actuator, a main valve disposed between an inlet chamber and an outlet chamber, and a pilot chamber. Said pilot chamber is linked with the outlet chamber via a main valve, comprising at least one pilot valve member and one valve body linked with the electromagnetic actuator, and with the inlet chamber via at least one connecting channel. The invention is characterized in that the stationary seat of the main valve is formed by an insert that is mounted in the; housing of the valve system. The main valve member is impinged upon on its diametrically opposed surfaces by the pressure present in the inlet chamber and the pressure present in the pilot chamber. The pilot chamber is linked with the inlet chamber via a connecting channel that extends through the main valve member. The pilot valve member is formed by the insert mounted in the housing of the valve system or by the housing. The connection to the outlet chamber is made via at least one connecting channel disposed in the housing or in the insert.

REFERENCES:
patent: 4345620 (1982-08-01), Ruchser et al.
patent: 4617861 (1986-10-01), Lichtenberg
patent: 4893645 (1990-01-01), Augustinas et al.
patent: 6062260 (2000-05-01), Yoshimura et al.
patent: 38 23 569 (1990-01-01), None
patent: 39 31 761 (1991-04-01), None
patent: 0 095 782 (1983-12-01), None
patent: 0 145 858 (1985-06-01), None
patent: 0 305 710 (1989-03-01), None
International Search Report, (Sep. 19, 2001).

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