US Patent Issued to YONEX on July 21 for "Grommet and racket" (Japanese Inventors)

ALEXANDRIA, Va., July 21 -- United States Patent no. 12,685,906, issued on July 21, was assigned to YONEX Co. LTD. (Tokyo).

"Grommet and racket" was invented by Hitoshi Kato (Niigata, Japan), Hiroki Nishiyama (Niigata, Japan), Koji Nagasawa (Tokyo) and Nao Inoue (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "To improve repulsion performance when a ball is hit by a racket. Grommets each include a strip-shaped portion and a cylinder portion protruding from one surface of the strip-shaped portion. The cylinder portion includes a plurality of ribs extending along an extending direction of a central axis of a cylinder main body. The plurality of ribs is constituted of first ribs protruding from an outer pe...