Patent ID: 8896406

Claim:
A laminated coil, comprising: a plurality of annular electrically conductive plates in the form of a flat plate, the plurality of annular electrically conductive plates comprising a first annular electrically conductive plate and a second annular electrically conductive plate; and an electrical insulation with which the plurality of annular electrically conductive plates are laminated on top of each other in a central axis direction, wherein each of the plurality of annular electrically conductive plates respectively comprises: at least two concentric circular arc parts comprising first and second circular arc parts that differ from each other in inner radius and outer radius, and an interconnection part which interconnects the at least two concentric circular arc parts, wherein the plurality of annular electrically conductive plates are arranged such that respective interconnection parts thereof are arranged on top of each other in the central axis direction and the respective at least two concentric circular arc parts of one annular electrically conductive plate are arranged to be radially coplanar with respective at least two concentric circular arc parts of another annular electrically conductive plate such that the first circular arc part of the first annular electrically conductive plate and the second circular arc part of the second annular electrically conductive plate are juxtaposed to each other in a radial direction, wherein the first circular arc part of the first annular electrically conductive plate does not overlap the second circular arc part of the second annular electrically conductive plate in an axial direction, and wherein the first circular arc part of the second annular electrically conductive plate and the second circular arc part of the first annular electrically conductive plate are juxtaposed to each other in the radial direction such that the first circular arc part of the second annular electrically conductive plate does not overlap the second circular arc part of the first annular electrically conductive in the axial direction.