Patent ID: 7088029
Filing Date: 2006-08-08
Classification: H02K

Abstract:
1. An electric generator comprising: a permanent magnet having a front surface and a back surface and composed of magnetic poles arranged radially and alternately around a rotation axis, wherein each pole on the front surface is juxtaposed with an opposite pole on the back surface; a coil wound around an electrically insulated bobbin; a plurality of metal pieces arranged radially around the rotation axis adjacent the front surface of said permanent magnet, for applying magnetic flux generated by the permanent magnet to the coil; and attracted means having a plurality of attracted pieces, said attracted pieces arranged radially around the rotation axis adjacent the back surface of said permanent magnet so as to be magnetized by the permanent magnet; wherein said permanent magnet, on one hand, and said metal pieces and said attracted means, on the other, are rotatable relative to one another about the rotation axis; and wherein said attracted pieces of the attracted means are placed in such positions that they do not correspond to the metal pieces.