Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
発電機
Document Type and Number:
Japanese Patent JP4846851
Kind Code:
B2
Abstract:
An electric generator 10 of the present invention comprises a permanent magnet 14, a coil 30, a yoke 20, and attracted means 19 composed of a plurality of attracted pieces 18 which are arranged radially around the rotation axis 12 and are magnetized by the permanent magnet 14. The permanent magnet 14, the coil 30, the yoke 20, and the attracted means 19 are mounted on the rotation axis 12 and the attracted pieces 18 that constitute the attracted means 19 are each placed in positions that correspond to positions that bisect the spaces between the metal pieces that constitute the yoke 20, so that the cogging torque exerted on the rotation axis 12 is reduced.

Inventors:
Keiji Hiramatsu
Application Number:
JP2010021105A
Publication Date:
December 28, 2011
Filing Date:
February 02, 2010
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
Keiji Hiramatsu
International Classes:
H02K21/24; H02K1/14; H02K1/22; H02K16/00; H02K21/14; H02K21/22
Domestic Patent References:
JP9286365A
JP1084661A
JP6153428A
JP31126223U
JP8256455A
JP11511948A
JP9286365A
JP6153428A
Attorney, Agent or Firm:
Yoshitake Hidetoshi
Takahiro Arita
Kazuki Nakao