ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,546,747, issued on Feb. 10, was assigned to NOVITECH INC. (Denver).
"Cushion for pipeline inspection device module" was invented by Ron Thompson (Vaughan, Canada), Min Xu (Woodbridge, Canada) and Calin Cristian Ganea (Toronto).
According to the abstract* released by the U.S. Patent & Trademark Office: "Circumferential and axial magnetizers for a magnetic flux leakage pig. A magnet bar may comprise at least one magnet and may be configured to collapse radially inward to the shaft. Magnetizers may include a cushion disposed about the shaft and biasing the magnet bar against a pipe wall. A sensor head disposed between circuit poles at each polar end of the magnet monitors magnetic flux....