Method and apparatus for forming magnetized zones on a magnetiza

Details Method and apparatus for forming magnetized zones on a magnetiza Method and apparatus for forming magnetized zones on a magnetiza

1989-08-30

1991-06-18

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

For magnetizing or demagnetizing

361146, H01F 1300

Patent

active

050252402

ABSTRACT:
The apparatus is used to make a magnet with a plurality of magnetic pole pairs. One or more pole pairs is formed by the apparatus as an initial step. Thereafter, additional pole pairs are formed by moving the apparatus with respect to the body to be magnetized or moving the body to be magnetized with respect to the apparatus. The apparatus is constructed so that previously magnetized portions of the magnetizable body are not demagnetized or significantly altered by the magnetization of adjacent parts of the magnetizable body.

REFERENCES:
patent: 3409853 (1968-11-01), Guerth
patent: 4043297 (1977-08-01), Hartmann et al.
patent: 4614929 (1986-09-01), Tsukuda et al.
patent: 4737753 (1988-04-01), Oudet

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