Pulse field metal detector with spaced, dual coil transmitter an

Details Pulse field metal detector with spaced, dual coil transmitter an Pulse field metal detector with spaced, dual coil transmitter an

1985-06-27

1986-08-12

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

With means to create magnetic field to test material

324243, 340551, G01R 3312, G08B 1324

Patent

active

046058982

ABSTRACT:
The apparatus of the invention comprises at least two transmitter coils (3) and a respective number of receiver coils (4). The transmitter coils (3) and the respective receiver coils (4) are placed in a crosswise position with respect to each other so that the primary fields created by the transmitter coils (3) are divergent.

REFERENCES:
patent: 2938163 (1960-05-01), Roffman et al.
patent: 3156862 (1964-11-01), Herrick
patent: 3588685 (1971-06-01), Fallenius et al.
patent: 3697972 (1972-10-01), Brown
patent: 3697996 (1972-10-01), Elder et al.
patent: 3758849 (1973-09-01), Susman et al.
patent: 3889249 (1975-06-01), Bennett et al.
patent: 3938125 (1976-02-01), Benassi
patent: 4063230 (1977-12-01), Purinton et al.
patent: 4135183 (1979-01-01), Heltemes
patent: 4308530 (1981-12-01), Kip et al.

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