Cylinder-type linear motor and moving parts thereof

Details Cylinder-type linear motor and moving parts thereof Cylinder-type linear motor and moving parts thereof

2008-04-04

2009-12-15

Mullins, Burton (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Linear

C310S012060, C310S015000

Reexamination Certificate

active

07633189

ABSTRACT:
The present invention provides a cylinder-type linear motor capable of shortening the total motor length with respect to a predetermined stroke length and capable of being operated as a brushless DC motor without a sensor means for sensing the position of a moving part being added in the axial direction. The present invention also provides a moving part of said cylinder-type linear motor, which can improve the magnetic flux density distribution waveform near both end portions of the moving part assembly and can improve the thrust characteristic by bringing the magnetic flux density distribution waveform closer to a cosine waveform and by increasing the amplitude of cosine waveform.

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