Method of manufacturing ferrite magnets for motors

Details Method of manufacturing ferrite magnets for motors Method of manufacturing ferrite magnets for motors

1995-06-27

1997-08-26

Czaja, Donald E.

Plastic and nonmetallic article shaping or treating: processes

Direct application of electrical or wave energy to work

Producing or treating magnetic product precursor thereof

264429, H02K 117

Patent

active

056607865

ABSTRACT:
A segment is magnetized by arranging it between two dies of a magnetizable material, which are armatures of an electromagnet and which each contact said segment along one of the cylindrical surfaces. In accordance with the invention, use is made of a die which comprises an element of a magnetizable material which leaves the longitudinal end portions of the piece to be magnetized partly uncovered, said die optionally being supplemented with elements of a non-magnetic material. The segment may be use in small-power motors, for example for use in cars.

REFERENCES:
patent: 4056770 (1977-11-01), Mohr et al.
patent: 4703210 (1987-10-01), Abukawa et al.
patent: 5204569 (1993-04-01), Hino et al.
Patent Abstracts of Japan, vol. 014, No. 302 (E-0946), Jun. 28, 1990 & JP-A-02 097261, Sony Corp., Apr. 9, 1990.
Patent Abstracts of Japan, vol. 014, No. 496 (E-0996), Oct. 29, 1990 & JP-A-02 206343 (Sogo Kanko Kaihatsu KK) Aug. 16, 1990.

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