G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 27/82 (2006.01) F16L 55/28 (2006.01) G01N 33/20 (2006.01) F16L 55/30 (2006.01)
Patent
CA 2312196
An inspection device for conduits made from ferromagnetic materials and for piplines includes a pulling element, a supporting structure of variable circumference disposed on the pulling element and comprising substantially radially disposed supporting arms each of which is pivotable about axes disposed perpendicular to a longitudinal central axis of the pulling element, and several permanent magnets disposed at the circumference of the supporting structure for generating a magnetic field, and with sensors. For strengthening or weakening the magnetic field generated by the permanent magnets in dependence upon the circumference of the supporting structure or in dependence upon the lateral separation between the permanent magnets, the permanent magnets are associated with further magnets having a magnetic field which can be varied in direction or strength.
Laursen Poul
Meredith Christopher
Freedman & Associates
Pii Pipetronix Gmbh
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