Electromagnetic control valve

Details Electromagnetic control valve Electromagnetic control valve

1988-08-19

1989-08-29

Michalsky, Gerald A.

Fluid handling

Systems

Supply and exhaust

74878, 1376371, 192 8714, F15B 1306

Patent

active

048607924

ABSTRACT:
In an electromagnetic control valve, a pair of spools are accommodated within a guide bore in a housing in coaxial relation to each other for axial movement relative to the housing. First and second flow passageways are formed in the housing. Flow of hydraulic fluid through the first flow passageway and flow of hydraulic fluid through the second flow passageway are controlled respectively by the pair of spools independently of each other. Movements of the respective spools are controlled respectively by a pair of electromagnetic drive units independently of each other. The pair of spools have their respective inner ends facing toward each other. The inner ends are spaced away from each other when the pair of spools are in their respective initial positions. Moving regions of the respective inner ends are at least partially overlapped with each other.

REFERENCES:
patent: 3289701 (1966-12-01), Booth et al.
patent: 4492251 (1985-01-01), Blake
patent: 4616674 (1986-10-01), Bardoll
patent: 4617967 (1986-10-01), Read et al.
patent: 4619187 (1986-10-01), Blake et al.
patent: 4643225 (1987-02-01), Imhof
patent: 4729408 (1988-03-01), Coutant
patent: 4763872 (1988-08-01), Ichihashi et al.

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