Magnetic scaling device

Details Magnetic scaling device Magnetic scaling device

1982-10-15

1984-11-27

Martin, Jr., William D.

Geometrical instruments

Area integrators

Electrical

33143L, 33172E, 324208, 377 24, G01B 702

Patent

active

044843917

ABSTRACT:
A magnetic scaling device has a housing formed at least partly of non-magnetic material, such as aluminum or stainless steel. A magnetic scale is disposed on the housing, and a reading head is disposed within the housing and provides an output signal corresponding to relative linear displacement of the reading head and the magnetic scale. In addition, a reference magnetizing body can be disposed on the housing, and a reference magnetic detector can be disposed within the housing to provide a reference signal in response to linear displacement of the detector to a predetermined position corresponding to the position of the reference magnetizing body. At least one of the magnetic scale and the reference magnetizing body is disposed on the exterior of the housing on a non-magnetic portion thereof.

REFERENCES:
patent: 3332009 (1967-07-01), Seale
patent: 3582769 (1971-06-01), Brandenburg
patent: 3777255 (1973-12-01), Young et al.
patent: 4226024 (1980-10-01), Westerberg et al.

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