ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,435,791, issued on Oct. 7, was assigned to SUMITOMO HEAVY INDUSTRIES LTD. (Tokyo).
"Wheel drive device" was invented by Terumasa Nagasaki (Yokosuka, Japan), Takuya Hirose (Obu, Japan) and Franz Rauh (Markt Indersdorf, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A wheel drive device that drives a wheel includes an output member, and a wheel member that is connected to the output member, in which the output member and the wheel member include a spigot fitting portion in which an outer peripheral spigot surface and an inner peripheral spigot surface are spigot-fitted, an anti-fretting agent is applied to the spigot fitting portion, and a seal mem...