ALEXANDRIA, Va., April 21 -- United States Patent no. 12,605,898, issued on April 21, was assigned to ORANGE AI Ltd. (Hong Kong).
"Detachable material spool" was invented by Zhen Wang (Hong Kong), Weiwen Luo (Hong Kong) and Yihan Ni (Hong Kong).
According to the abstract* released by the U.S. Patent & Trademark Office: "A detachable material spool includes a first spool body, a second spool body, a mounting cylinder, and a limiting assembly. The mounting cylinder is arranged on the first spool body and configured to mount a consumable roll. The limiting assembly is arranged on the second spool body. The second spool body is detachably connected to the mounting cylinder through the limiting assembly. During disassembly of the second spool ...