Method of and an apparatus for magnetising a plurality of...

Details Method of and an apparatus for magnetising a plurality of... Method of and an apparatus for magnetising a plurality of...

2007-04-17

2007-04-17

Lee, K. (Department: 2832)

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

For magnetizing or demagnetizing

Reexamination Certificate

active

10416652

ABSTRACT:
A method of magnetizing members of magnetizable material (210) including presenting a magnetizer head to a circular array of the members (210) mounted on a rotor plate (200) of an electrical machine. The magnetizer head includes a circular array of coils (142), each coil (142) being positioned adjacent a respective one of the members (210). A current is supplied to selected juxtaposed pairs of the coils (142) so as to set up a magnetic field. Flux of the field forms a closed loop through the pair of coils (142) and the adjacent pair of members (210), such that uncontrolled flux leakage from this loop is minimized and such that the pair of members (210) are at least partially magnetized.

REFERENCES:
patent: 4707677 (1987-11-01), Oudet
patent: 6744341 (2004-06-01), Iwami et al.
patent: 6853280 (2005-02-01), Sugawara et al.
patent: 1284945 (1962-02-01), None
patent: 2502386 (1982-09-01), None
patent: 62 274608 (1987-11-01), None

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