Magnetic ring for detecting the rotation of an object

Details Magnetic ring for detecting the rotation of an object Magnetic ring for detecting the rotation of an object

1986-07-23

1989-05-30

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Magnet structure or material

35284, H01F 702

Patent

active

048355054

ABSTRACT:
A ring to be attached to a rotating body for producing a magnetic signal in cooperation with a magnetic sensor relative to which the rotating body rotates, comprising: a magnetic ring member having an alternating magnetic property along its circumference consisting of synthetic resin in which magnetic material is dispersed; and a reinforcement ring member which is made of synthetic resin material and substantially surrounds the magnetic ring member. Alternatively, the reinforcement ring may consist of a metallic band which extends the full circumferential surface of the ring. By thus reinforcing the resinous magnetic material, the cost of the ring can be reduced, and the increased mechanical strength of the ring allows easy handling and effective press fitting of the ring. By forming the ring with a plurality of arcuate portions, the stocking and installing of the ring is facilitated.

REFERENCES:
patent: 4549157 (1985-10-01), Loubier
patent: 4555685 (1985-11-01), Maruyama

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