ALEXANDRIA, Va., July 16 -- United States Patent no. 12,358,220, issued on July 15, was assigned to SHENZHEN CREALITY 3D TECHNOLOGY Co. LTD. (Guangdong, China).
"Switching device and 3D printing apparatus" was invented by Jingke Tang (Shenzhen, China), Dajiang Wu (Shenzhen, China) and Bo Gong (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to a switching device and a 3D printing apparatus. The switching device includes a rack, an extrusion assembly, a pushing assembly and a driving assembly. The extrusion assembly is connected to the rack and includes a driving roller and a first pressing wheel and a second pressing wheel located on a circumferential outer side ...