ALEXANDRIA, Va., July 14 -- United States Patent no. 12,679,631, issued on July 14.
"Powder bridging breaker" was invented by Kao-Sung Chen (Tainan City, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A powder bridging breaker includes a housing, a power transmission assembly, an upper cover, a lower cover, a blade, and a gear motor. The powder bridging breaker is fixed under the hopper, with a powder passage formed in the middle. A gear box includes a connecting pipe on each side thereof to be connected to the housing. One crossbeam houses the power transmission assembly. The other crossbeam is a high-pressure air channel. The upper cover includes an arm with a blade connected at one end of the arm. ...