Armature with vent passages for vehicle actuator

Details Armature with vent passages for vehicle actuator Armature with vent passages for vehicle actuator

2007-08-07

2007-08-07

Bastianelli, John (Department: 3753)

Valves and valve actuation

Electrically actuated valve

Freely rotatable ball valve

C251S129150

Reexamination Certificate

active

11057948

ABSTRACT:
In a vehicle solenoid valve, the spool that holds the actuation coil is formed with a hexagonal or octagonal inner chamber in which a cylindrical armature can slide. Owing to the different cross-sectional shapes between the spool and armature, a longitudinal fluid vent passageway is established along each edge of the chamber between the non-cylindrical walls of the chamber and the cylindrical armature so that movement of hydraulic fluid relative to the armature is promoted when the armature moves. The face of the spool that is oriented toward the valve end can be formed with radial vent grooves to further facilitate fluid venting when the armature moves.

REFERENCES:
patent: 3550632 (1970-12-01), Kozel et al.
patent: 3757263 (1973-09-01), Saarem et al.
patent: 4087773 (1978-05-01), Jencks et al.
patent: 4326696 (1982-04-01), Ishikawa et al.
patent: 4859005 (1989-08-01), Rey et al.
patent: 4995559 (1991-02-01), Okamoto et al.
patent: 4998559 (1991-03-01), McAuliffe, Jr.
patent: 5255855 (1993-10-01), Maier et al.
patent: 6086042 (2000-07-01), Scott et al.

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