Patent ID: 7839246

Claim:
A field structure, comprising: a first field source; a second field source, said first field source and said second field source being positioned in accordance with a spatial force function such that at least one pole of said first field source is in proximity to at least one like pole of said second field source resulting in a repelling force; and at least one holding mechanism, said at least one holding mechanism providing a holding force sufficient to overcome said repelling force, said spatial force function being in accordance with a code, said code corresponding to a code modulo of said field structure and a code modulo of an additional field structure, said code defining a peak spatial force corresponding to substantial alignment of said code modulo of said field structure with said code modulo of said additional field structure, said code also defining a plurality of off peak spatial forces corresponding to a plurality of different misalignments of said code modulo of said field structure and said code modulo of said additional field structure, said plurality of off peak spatial forces having a largest off peak spatial force, said largest off peak spatial force being less than half of said peak spatial force.