ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,422,327, issued on Sept. 23, was assigned to KOKUSAI KEISOKUKI K.K. (Tokyo).
"Dynamic balance testing device" was invented by Satoshi Ishitoya (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A dynamic balance testing device includes a vibrating unit configured to rotatably hold a predetermined rotating body being a specimen, a first spring configured to elastically support the vibrating unit and restrict displacement of the vibrating unit in a direction parallel to a rotation axis of the predetermined rotating body, and at least three second springs configured to elastically support the vibrating unit and restrict displacement of the vi...