ALEXANDRIA, Va., March 3 -- United States Patent no. 12,565,406, issued on March 3, was assigned to Hangzhou Rock Machinery Manufacture Co. Ltd (Hangzhou, China).
"Hand winch" was invented by Minjie Han (Hangzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hand winch is provided in the disclosure, which includes a first bracket, a second bracket, a first rotating shaft, a second rotating shaft, a handle, a one-way bearing assembly, a protective shell, a disc spring and an adjusting nut. The first rotating shaft and the second rotating shaft are respectively rotatably arranged on the first bracket and the second bracket, and the first rotating shaft is matched with the second rotating shaft, and t...