Actuator having a permanent magnet
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United States of America Patent
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-
Mar 15, 2005
Grant Date -
Dec 30, 2004
app pub date -
Jun 26, 2003
filing date -
Apr 12, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A solenoid for use in a valve such as an exhaust gas recirculation valve for a motor vehicle. The solenoid includes a housing having a coil for generating a first magnetic field. An armature is slidably mounted in the housing. The solenoid further includes a permanent magnet having a second magnetic field, wherein the magnet is located adjacent the armature. In addition, a stator is affixed in the housing for cooperation with the armature and the magnet to form a third magnetic field.
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