Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Magnet structure or material
Patent
1991-10-28
1993-11-02
Picard, Leo P.
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Magnet structure or material
335302, H01F 702
Patent
active
052587355
ABSTRACT:
The composite magnet of the present invention comprises two pieces of permanent magnet material formed into a complementary pattern of holes and projections. The two pieces are magnetized in opposite axial directions. The two pieces, magnetized in this manner, when placed together form an interlocking single element which exhibits a magnetic pattern of north-south poles which matches the pattern of holes and projections. In this manner, the composite magnet appears as a single permanent magnet, exhibiting a sharp, strong, and well-defined magnetic pattern. In accordance with the present invention, the composite magnet may be used in many applications including, but not limited to encoders, one of which is described in detail.
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Barrera Raymond
Picard Leo P.
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