MAGNETIC SHEET WITH REPEATED CURVED MAGNETIC AREAS

摘要

A flexible planar magnetic sheet (10) for therapeutic use has a regular repeating pattern of curved first and second areas (82 and 84) of alternating magnetic polarity arranged so that a line travers es a plurality of said curved areas in a majority of pos- sible orientations of the line along the surface plane of the sheet (10) wit h respect to the pattern. In one embodiment, the pattern comprises an array of polka dot regions (14) of one polarity uniformly sized and spaced on a background of opposite polarity. Alternatively, the pattern can be shaped as a series of interdigitated undulating first and second areas (82 and 84) of alternating magnetic polarity. The areas (82 and 84) each have curved boundaries defined by wavy lines and a width which varies between a maximum and a minimum proceeding generally lengthwise along the wavy lines o f a lengthwise periodicity to define lobe-shaped portions (88) of each area.