ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,459,198, issued on Nov. 4.
"Systems for three-dimensional printing" was invented by Robert Karklinsh (Los Angeles).
According to the abstract* released by the U.S. Patent & Trademark Office: "A printhead for three-dimensional printing features a mixing cavity and a mixing rotor with a mixing portion disposed within the mixing cavity. The mixing rotor is operated by a motor to mix at least one polymeric stream received in the mixing cavity. The system further includes a control valve having a seat and a valve stem. The valve stem is mounted such that at least a portion thereof traverses through a void made along the mixing rotor. A pressure-generating mechanism advances the polymeric s...