Electrical generator or motor structure – Dynamoelectric – Linear
Reexamination Certificate
2008-03-25
2008-03-25
Le, Dang (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Linear
C310S090000, C267S140130
Reexamination Certificate
active
07348694
ABSTRACT:
In an electromagnetic actuator including a bearing member which slidably supports a variable core, a yoke for retaining a coil assembly by cooperation with a bottom wall of a housing is connected to the housing, and the bearing member is fitted into the yoke. A support for supporting an outward-facing flange formed at one end of the bearing member is mounted on the bottom wall, and a set spring for biasing the outward-facing flange toward the support is mounted under compression between the outward-facing flange and the first yoke. A low-friction material coating made of a fluorocarbon resin is formed on at least one of opposed sliding surfaces of the bearing member and a movable core. Thus, even if wear powder is generated between the set spring of the bearing member and a portion on which the set spring is pressed, the wear powder is prevented from entering inside the bearing member.
REFERENCES:
patent: 4242606 (1980-12-01), Nonnenmann
patent: 4552417 (1985-11-01), Yamashita et al.
patent: 6994332 (2006-02-01), Goto et al.
patent: 2001-1765 (2001-01-01), None
Kon Hirozumi
Tahara Toshihiro
Arent & Fox LLP
Keihin Corporation
Le Dang
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