Title:
PERMANENT MAGNET, ITS MANUFACTURING METHOD, AND POSITION SENSOR
Document Type and Number:
Japanese Patent JP2003257738
Kind Code:
A
Abstract:
To provide a permanent magnet that can be improved in detection sensitivity when the magnet is used as a position sensor.
This permanent magnet 11 is magnetized so that its magnetic flux density may gradually increase from one end section to the other end section at a fixed gradient. In a method of manufacturing the permanent magnet 11, a magnetic material 11' is magnetized in a parallel magnetic field after the material 11' is disposed in the parallel magnetic field so that, for example, a magnetic flux passing through the magnetic material 11' in the magnetic field may gradually increase from one end section to the other end section of the material 11'.
Inventors:
MURAJI TETSURO
SHIBATA MITSUHIRO
SHIBATA MITSUHIRO
Application Number:
JP2002055340A
Publication Date:
September 12, 2003
Filing Date:
March 01, 2002
Export Citation:
Assignee:
MIKUNI KOGYO KK
International Classes:
G01D5/12; H01F13/00; (IPC1-7): H01F13/00; G01D5/12
Attorney, Agent or Firm:
Akinori Sakai