Linear drive apparatus

Details Linear drive apparatus Linear drive apparatus

2006-02-28

2006-02-28

Schuberg, Darren (Department: 2834)

Freight accommodation on freight carrier

Particular article accommodation

Wheeled vehicle

Reexamination Certificate

active

07004694

ABSTRACT:
The conventional linear drive apparatus has the problem that in constructing a linear motor of a multiphase structure by connecting a plurality of armature units, the length of the armature becomes longer in proportion to the number of the phases, thus limiting the locations where the apparatus can be installed. The problem is solved by a linear drive apparatus comprising a plurality of armature units3formed by a magnetic material on which a conductor coil4is disposed, and an armature comprising an arrangement of the armature units3. The armature units3comprise a plurality of opposing portions having opposing magnetic pole teeth. The magnetic pole teeth of adjacent opposing portions are arranged in an interdigitated manner. A secondary member6is disposed between magnetic pole teeth of the opposing portions. The armature units3comprise the coil4arranged on opposite sides thereof in an alternating manner.

REFERENCES:
patent: 6570274 (2003-05-01), Kim et al.
patent: 2001-28875 (2001-01-01), None

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