Fluid handling – Systems – Multi-way valve unit
Patent
1998-11-30
2000-11-21
Rivell, John
Fluid handling
Systems
Multi-way valve unit
13759617, 3031192, F16R 3102, B60T 836
Patent
active
061488593
ABSTRACT:
A solenoid-controlled valve assembly comprises a solenoid (1) for controlling operation of a spool valve (2), and the solenoid is contained within a solenoid body (3). The spool valve comprises a spool (40) working in a bore (41, 42) in a spool housing (12), and the housing is, in turn, sealingly received in a spool body (10). The housing (12) may be of differential area and may be sealingly received in a complementary stepped bore (11) in the spool body, with the housing arranged in such a manner that when subjected to equal pressures over different area a resultant force tends to urge the housing in a given direction. In a modification the housing (12) may be resiliently biased away from the spool body (10) and relatively towards the solenoid (1) by a resilient member such as an annular ring (70) of elastomeric material, or a spring washer (71).
REFERENCES:
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patent: 4422475 (1983-12-01), Aspinwall
patent: 5076538 (1991-12-01), Mohr et al.
patent: 5163474 (1992-11-01), Rizk
patent: 5221129 (1993-06-01), Takasaki
patent: 5306076 (1994-04-01), Tyler
patent: 5445447 (1995-08-01), Farr et al.
patent: 5678902 (1997-10-01), Farr et al.
Lucas Industries plc
Rivell John
LandOfFree
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