Active vibration damping device

Details Active vibration damping device Active vibration damping device

2007-10-02

2007-10-02

Lam, Thanh (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Reciprocating

C310S051000

Reexamination Certificate

active

11268512

ABSTRACT:
An active vibration damping device having a solenoid actuator designed with a movable element positioned inserted into a guide hole of a stator having a yoke member is attached about a coil to form a stator-side magnetic path with the guide hole lying on its center axis, so that current passed through the coil creates actuating force in the axial direction between the stator and the movable element. A magnetic acting force stabilizing portion having a shape that gradually varies in association with axial displacement of the movable element an level of magnetic acting force between a movable element-side magnetic pole forming portion and a stator-side magnetic pole forming portion is disposed on the movable element-side magnetic pole forming portion where a magnetic pole is produced in the movable element and/or the stator-side magnetic pole forming portion where a magnetic pole is produced in the stator.

REFERENCES:
patent: 5004215 (1991-04-01), Aubry et al.
patent: 5992582 (1999-11-01), Lou et al.
patent: 6202806 (2001-03-01), Sandrin et al.
patent: 6340080 (2002-01-01), Carlson
patent: 1 560 230 (2005-08-01), None
patent: A 9-49541 (1997-02-01), None
patent: A 2000-283214 (2000-10-01), None

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