ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,528,129, issued on Jan. 20, was assigned to ZHEJIANG PRULDE ELECTRIC APPLIANCE Co. LTD. (Jinhua, China).
"Screw-cutting shear" was invented by Chenghao Yang (Jinhua, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A screw-cutting shear includes a shear base and a shear lever which are hinged with each other; a rotary cam is arranged on the shear base, a track groove is formed on a sidewall of the cam, and a first drive piece fitted with an outer sidewall of the cam and a second drive piece fitted with the track groove are provided on the shear lever. The shear lever has a shearing position and an expanded position. The cam pushes the first drive pi...