Receiver coil assembly with air and ferromagnetic cored sensors for geophysical surveying
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United States of America Patent
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Jun 21, 2016
Grant Date -
Nov 22, 2012
app pub date -
May 17, 2012
filing date -
Nov 27, 2009
priority date (Note) -
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Abstract
A receiver coil assembly for performing geophysical surveys, including a hollow outer shell defining a continuous internal passage that forms a loop; a multiturn receiver air coil extending around the continuous internal passage; and a first cored coil comprising multiturn solenoid windings about a ferromagnetic core, the first cored coil having a sensing axis in a different direction than a sensing axis of the air coil.
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