Patent ID: 8502630

Claim:
A magnetic structure comprising: a first plurality of magnetic sources based on a first polarity pattern; and a second plurality of magnetic sources based on a second polarity pattern, said second polarity pattern differing from said first polarity pattern, said magnetic structure configured for use with a complementary magnetic structure comprising a third plurality of magnetic sources having a third polarity pattern complementary to said first polarity pattern and a fourth plurality of magnetic sources having a fourth polarity pattern complementary to said second polarity pattern, said first plurality of magnetic sources and said third plurality of magnetic sources having a first correlation function over a range of motion, said second plurality of magnetic sources and said fourth plurality of magnetic source having a second correlation function over said range of motion, said magnetic structure and said complementary magnetic structure having a third correlation function corresponding to a combination of said first correlation function and said second correlation function, said third correlation function having a greater peak force to maximum off peak force ratio than either of said first correlation function or said second correlation function.