Method and apparatus for compensation of interference magnetic f

Details Method and apparatus for compensation of interference magnetic f Method and apparatus for compensation of interference magnetic f

1975-09-02

1977-11-15

Broome, Harold

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Combined with diverse-type art device

33358, 361146, H01F 1300

Patent

active

040587827

ABSTRACT:
Compensating magnets are located on the article being tested which are adjustable to provide a range of magnetic moments. In a first version, each compensating magnet consists of an annular permanent magnet received on a rod-like element positioned on the surface of the article, which magnet is adjustable with respect to the article surface. In a second version, the magnet is located at a fixed spacing with respect to the article surface and a shunt is adjustable to vary the compensating field.

REFERENCES:
patent: 438777 (1890-10-01), Merrill
patent: 769870 (1904-09-01), Morrison
patent: 1922864 (1933-08-01), Rhea
patent: 1977954 (1934-10-01), Reichel
patent: 1982405 (1934-11-01), Titterington
patent: 2011775 (1935-08-01), Reichel et al.
patent: 2048920 (1936-07-01), Colvin
patent: 2417864 (1947-03-01), Dinsmore
patent: 2528446 (1950-10-01), McConnell
patent: 3110282 (1963-11-01), Foerster
patent: 3530704 (1970-09-01), Wallace

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