Patent Number: 6,297,736

Title: Locating concealed conductors

Abstract: A method of locating a concealed conductor is performed by generating a magnetic field with a direction in which the field is a maximum. The magnetic field is rotated until that direction is directed towards the conductor. In this way, a signal is induced in the conductor which has a maximum value when that direction is directed towards the conductor. The induced signal is detected in the conductor, using a detector arranged to determine the direction of the conductor relative to the detector. The detector detects when the induced signal has the maximum value.

Inventors: Lewis; Andrew Biggerstaff (Bristol, GB), Frost; Nicholas James (Somerset, GB)

Assignee: Radiodetection Limited

International Classification: G01V 3/08 (20060101); G08B 013/24 ()

Expiration Date: 10/02/2018