Linear drive with a reduced axial force component, as well...

Details Linear drive with a reduced axial force component, as well... Linear drive with a reduced axial force component, as well...

2007-01-18

2011-11-15

Leung, Quyen (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Linear

C310S012240, C310S012010, C310S027000

Reexamination Certificate

active

08058754

ABSTRACT:
A linear drive including a stator and a rotor configured for linear reciprocal movement along an axis, with the stator having a magnetic-field guide core having a plurality of legs extending each with one foot substantially toward the rotor, with the rotor having a plurality of magnets disposed in a linear array along the direction of the axis, wherein at least one of a respective one of respective lengths of the magnets along the axis and the respective widths of the legs along the axis and the respective spacings of the legs along the axis are different such that force components of the magnets along the axis will substantially compensate each other when the linear drive is in a de-energized state.

REFERENCES:
patent: 4638192 (1987-01-01), von der Heide
patent: 5013223 (1991-05-01), Takahashi et al.
patent: 5175457 (1992-12-01), Vincent
patent: 5910691 (1999-06-01), Wavre
patent: 6081052 (2000-06-01), Hosoe et al.
patent: 6236125 (2001-05-01), Oudet et al.
patent: 6718919 (2004-04-01), Muraji
International Search Report PCT/EP2007/050480.

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