Locator of electrically conductive objects
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United States of America Patent
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Jul 31, 2001
Grant Date -
N/A
app pub date -
Dec 14, 1998
filing date -
Mar 7, 1997
priority date (Note) -
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Abstract
In order to locate an electrically conductive object, the electromagnetic field generated by a current in the object is detected by a detector having a plurality of spaced apart antennas. In order for the location of the object to be determined, two or more of the antennas together have at least four aerials, with first and second aerials measuring field components in a direction perpendicular to the direction of separation of the antennas, the third aerial measuring field components parallel to the direction of separation and the fourth aerial measuring field components in a direction mutually perpendicular to the field components measured by the first, second and third aerials.
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