Proportional pressure adjustment valve

Details Proportional pressure adjustment valve Proportional pressure adjustment valve

2005-06-14

2005-06-14

Michalsky, Gerald A. (Department: 3753)

Fluid handling

Systems

Supply and exhaust

Reexamination Certificate

active

06904934

ABSTRACT:
A proportional pressure adjustment valve is described which comprises one valve part with inlet and outlet openings (4) and at least one closing mechanism (7) for control of a valve (12), the same as a magnet part having one magnet core, one magnet coil and one displaceably disposed magnet armature. An actuating element (11) cooperates with the armature, actuating the spherical closing mechanism (7). The hydraulically active cross section of the valve (12) is essentially determined by the length of the valve (L), the diameter of the valve (D) and th diameter (d) of the part (13) of the actuating element (11) which penetrates into the valve. According to invention, the ratio of the length of the valve (L) to the diameter of the valve (d) is less than 2.0.

REFERENCES:
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patent: 6418967 (2002-07-01), Frei et al.
patent: 2002/0053362 (2002-05-01), Frei et al.
patent: 44 26 152 (1996-03-01), None
patent: 199 43 066 (2000-03-01), None
patent: 98/48332 (1998-10-01), None
Backe, Prof. Dr.-Ing W., “Umdruck zur Vorlesung”, Institut für hydraulische und pneumatische Antriebe under Steuerungen der RWTH Aachen, 1986, pp. 6-9.

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