Patent ID: 8368495
Filing Date: 2013-02-05
Classification: B42F,G09F,H01F

Abstract:
1. A magnetic field force generator for producing a magnetic force profile comprising: a first composite magnet structure comprising a first magnet array and a second magnet array; said first magnet array based on a first magnet pattern, said second magnet array based on a second magnet pattern, said second magnet pattern differing from said first magnet pattern; said first composite magnet structure configured for use with a complementary composite magnet structure comprising a first complementary magnet array and a second complementary magnet array, said complementary composite magnet structure being complementary to said first composite magnet structure; said first magnet pattern comprising a sequence of two magnets having the same polarity along a direction of relative motion between said first composite magnet structure and said complementary composite magnet structure; said first magnet pattern also comprising a sequence of three magnets having alternating polarity along said direction of relative motion.