Solenoid valve

Details Solenoid valve Solenoid valve

2007-02-07

2009-08-25

Fristoe, Jr., John K (Department: 3753)

Valves and valve actuation

Electrically actuated valve

Including solenoid

C251S337000

Reexamination Certificate

active

07578494

ABSTRACT:
A solenoid valve includes a coil, a stator core, a valve member, a coil spring, and a stopper. The coil provides a magnetic field when the coil is energized. The stator core includes a receiving bore, wherein the stator core generates a magnetic attractive force when the coil is energized. The valve member is attracted toward the stator core due to the magnetic attractive force generated by the stator core. The coil spring is received in the receiving bore of the stator core, wherein the coil spring biases the valve member in an opposite direction opposite from the stator core. The stopper positions the coil spring such that an outer peripheral surface of the coil spring is separated from an inner peripheral surface of the receiving bore.

REFERENCES:
patent: 4807846 (1989-02-01), Greiner et al.
patent: 6595485 (2003-07-01), Burrola et al.
patent: 6830232 (2004-12-01), Burrola et al.
patent: 7047763 (2006-05-01), Hirota
patent: 7055539 (2006-06-01), Suzuki
patent: 7275732 (2007-10-01), Kato et al.
patent: 2001-182638 (2001-07-01), None
Chinese Office Action dated Sep. 12, 2008 issued in counterpart Chinese Application No. 20070006293.4, with English translation.

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