Three port solenoid valve

Details Three port solenoid valve Three port solenoid valve

2005-06-07

2005-06-07

Michalsky, Gerald A. (Department: 3753)

Fluid handling

Systems

Multi-way valve unit

C137S625270, C251S129080

Reexamination Certificate

active

06901959

ABSTRACT:
A solenoid valve includes a housing that establishes a supply port, a control port, and an exhaust port. A fluted bushing is statically affixed within the housing and a poppet slides within the bushing. The poppet is movable between a de-energized configuration wherein flow is prohibited between the control port and the exhaust port, and permitted between the control port and the supply port, plural partially energized configurations wherein flow is permitted between the supply port and the control port, between the control port and the exhaust port, and between the exhaust port and the supply port, and a fully energized configuration wherein flow is prohibited between the control port and the supply port and flow is permitted between the control port and the exhaust port.

REFERENCES:
patent: 2930404 (1960-03-01), Kowaski et al.
patent: 4711265 (1987-12-01), Davis et al.
patent: 4844122 (1989-07-01), Ichihashi
patent: 5083747 (1992-01-01), Schmitt-Matzen
patent: 6578933 (2003-06-01), Hageman et al.
patent: 6619615 (2003-09-01), Mayr et al.
patent: 20040134547 (2004-07-01), Moreno et al.

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