Device having oppositely spaced coils for determining a shape of

Details Device having oppositely spaced coils for determining a shape of Device having oppositely spaced coils for determining a shape of

1990-01-10

1991-09-24

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

With means to create magnetic field to test material

209546, 324226, 324227, 324234, 324238, G01R 3312, G01N 2782, G01B 728, B07C 500

Patent

active

050516949

ABSTRACT:
A measuring device for contactless determination of condition of screw shaped structural elements comprises two oppositely located coils supplied with an alternating current spaced from one another so that an electrically conductive structural element passes therebetween, and transporting elements formed so that the structural element is guided on an edge so that a distance between the structural element and at least one of the coils remains constant during a measuring process.

REFERENCES:
patent: 2537731 (1951-01-01), Angell
patent: 3392829 (1968-07-01), Keinanen
patent: 3539006 (1970-11-01), Hanna et al.
patent: 3870948 (1975-03-01), Holt et al.
patent: 3883796 (1975-05-01), Holt et al.

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