ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,773,599, issued on Oct. 27.

"Pad structure" was invented by Wei-Jung Chen (Taipei City, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A pad structure applied to a damping device and a racket frame or a racket frame with a through hole and a string includes a first slider having an end corresponding to the bottom of the damping device or the string or the racket frame and another end having a primary junction, a second slider installed to the other end of the first slider, and an end of the second slider having a secondary junction opposite to the primary junction, and the other end of the second slider being corresponding to the racket frame or ...