ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,523,275, issued on Jan. 13, was assigned to SUMITOMO HEAVY INDUSTRIES LTD. (Tokyo).
"Eccentric oscillating gear device" was invented by Kenji Shirouzu (Aichi, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An eccentric oscillating gear device includes: a crankshaft including an eccentric body; an oscillating gear oscillated by the eccentric body; and an eccentric bearing disposed between the oscillating gear and the eccentric body, in which the eccentric bearing includes a plurality of rolling elements, some rolling elements adjacent in a circumferential direction of the plurality of rolling elements are in contact with each other, and a spacer is...