ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,427,629, issued on Sept. 30, was assigned to KABO TOOL COMPANY (Taichung, Taiwan).
"Anti-vibration wrench" was invented by Chih-Ching Hsieh (Taichung, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An anti-vibration wrench includes a main body, a driving member and an elastic member. The main body includes a driving portion. The driving portion has a through hole and a driving axis. The driving member is sleeved in the through hole of the driving portion, and includes a tooth portion and an outer groove. The tooth portion is disposed around an inner annular surface of the driving member. The outer groove is disposed around an outer annular surfa...