ALEXANDRIA, Va., June 16 -- United States Patent no. 12,654,752, issued on June 16, was assigned to MITSUBISHI ELECTRIC Corp. (Tokyo).
"Wheel tread roughness estimation device and wheel tread roughness estimation method" was invented by Etsuji Matsuyama (Tokyo) and Tsutomu Nishioka (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A wheel tread roughness estimation device includes a driving information acquisition unit that obtains driving information of a railway vehicle; a vehicle information acquisition unit that obtains vehicle information of the railway vehicle in service; a wheel tread roughness computation unit that determines a set value on the basis of the driving information and the vehicle inf...