Method of making a magnetic rotation sensor

Details Method of making a magnetic rotation sensor Method of making a magnetic rotation sensor

1992-11-16

1994-10-04

Snow, Walter E.

Metal working

Method of mechanical manufacture

Electrical device making

32420725, 3242072, H01F 706, G01B 714, G01N 2772, G01R 3312

Patent

active

053513878

ABSTRACT:
This invention relates to a rotation sensor which detects the magnetic field which changes with the rotation of a rotary shaft, thereby to detect the amount of rotation of the rotary shaft. The rotation sensor of the present invention has the boundaries between magnetized regions set with high precision. The boundaries forms magnetic fields stably, whereby the detection of rotation is performed with high accuracy.

REFERENCES:
patent: 4801830 (1989-01-01), Ogino et al.
patent: 4983916 (1991-01-01), Iijima et al.
patent: 5117183 (1992-05-01), Santos

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