Patent ID: 8570129

Claim:
A complex machine, comprising: a classical simple machine; and a magnetic system that applies a force to said classical simple machine, said magnetic system comprising: a first magnetic structure; and a second magnetic structure that interacts with said first magnetic structure to produce said force, said first magnetic structure comprising a plurality of magnetic sources having a polarity pattern that includes a first polarity and a second polarity, said second polarity being opposite said first polarity, said second magnetic structure comprising one or more magnetic sources, wherein said magnetic system comprises a multi-level magnetic system having a force curve that transitions from producing an attract force to producing a repel force depending on a separation distance between the first magnetic structure and the second magnetic structure, said multi-level magnetic system having a transition distance where said multi-level magnetic system produces zero force, wherein said multi-level magnetic system produces an attract force when said separation distance is less than said transition distance and an repel force when said separation distance is greater than said transition distance, wherein said magnetic system further comprises a spacer that is between said first magnetic structure and said second magnetic structure, wherein said spacer prevents said multi-level magnetic system from applying an attract force to said classical simple machine.