ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,409,532, issued on Sept. 9, was assigned to BOLTING MASTER (Suncheon-si, South Korea).
"Coupling device for replacement of gear box of electric torque wrench" was invented by Keum Joon Park (Suncheon-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "According to exemplar embodiments of the present invention, a coupling device for replacement of gear box of electric torque wrench comprises a coupling socket (100) including: a socket shaft (110) coupled with a motor rotating shaft of an electric motor mounted on a main body casing (10) of the electric torque wrench; and a socket body (120) mounted on a gear box coupling surface (11) correspo...