ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,539,929, issued on Feb. 3, was assigned to KYUSHU INSTITUTE OF TECHNOLOGY (Kitakyushu, Japan).
"Mobile device with spherical drive system" was invented by Hiroyuki Miyamoto (Kitakyushu, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a mobile device 10 with a spherical drive system that moves over a travel surface G and comprises four or more rotors 15, 15', 16, 16', 17, 17', 18 and 18' that are rotationally driven by driving sources 20, 22, 24 and 26 while in contact with four driving spheres 11, 12, 13 and 14 from two different directions, thereby causing the driving spheres to rotate, wherein the centers P1, P2, P3 and P4 of the drivi...