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Coil Device and Magnetic Field Generating Device

  • US 20080114429A1
  • Filed: 04/22/2005
  • Published: 05/15/2008
  • Est. Priority Date: 04/23/2004
  • Status: Active Grant
First Claim
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1. A bread-shaped coil device comprising a current path extending in the shape of a spiral in a substantially same plane, said current path comprising a hollow cylindrical member of a nonmagnetic material inside which a space is formed and a plurality of conductive wires covered with an insulation material on the peripheries thereof which are arranged on the periphery of said hollow cylindrical member, each conductive wire being arranged in the circumference of a circle in a predetermined diameter seen from the cross-sectional direction of the current path.

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