ALEXANDRIA, Va., March 19 -- United States Patent no. 12,253,435, issued on March 18, was assigned to KOMATSU LTD. (Tokyo).
"Power transmission device" was invented by Manabu Nakamura (Tokyo) and Masaya Katou (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "An oil leak detection device includes a pair of permanent magnets, a plurality of commutators, a coil, a pair of brushes, and a current sensor. An N-pole and an S-pole of the pair of permanent magnets face each other. The plurality of commutators are attached to an output shaft. The coil is wound onto the output shaft inside the pair of permanent magnets in the radial direction of the output shaft. The coil is electrically connected to the plurality ...