Radial anisotropic cylinder type ferrite magnets and their manufacturing methods and motors

  • US 5,506,557 A
  • Filed: 01/18/1994
  • Issued: 04/09/1996
  • Est. Priority Date: 03/18/1992
  • Status: Expired due to Term
First Claim
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1. A radially anisotropic cylindrical ferrite magnet composed of a ferrite containing at least one element selected from the group consisting of Sr and Ba, said ferrite magnet having a complete roundness formed by grinding the inner and outer peripheral surfaces of the cylindrical ferrite magnet after sintering thereof and a slit extending in an axial direction thereof, and being an integrated one-piece body except for said slit.

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