Compact magnetic encoder

Details Compact magnetic encoder Compact magnetic encoder

1989-01-25

1991-01-08

Snow, Walter E.

Electricity: measuring and testing

Magnetic

Displacement

32420725, 324235, 338 32R, G01B 714, G01N 2772, G01R 3312

Patent

active

049839160

ABSTRACT:
In construction of a magnetic encoder used for detection of displacement of a mobile body, a circular magnetized pattern is formed on one longitudinal end face of a magnetic rotary spindle mechanically coupled to the mobile body, and a magnetic sensor faces the magnetized pattern with a prescribed gap. Direct formation of the magnetized pattern on the rotary spindle excludes production errors caused by the conventional coupling process and end-face magnetization assures significant compactness of the entire construction.

REFERENCES:
patent: 4257040 (1981-03-01), Sherasaki et al.
patent: 4488076 (1984-12-01), MaCleod
patent: 4656377 (1987-04-01), Akiyama et al.
patent: 4851752 (1989-07-01), Nishimura et al.

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