US Patent Issued to DONGGUAN FENGYI INSTRUMENT on March 18 for "Washing powder feeding device and feeding method thereof" (Chinese Inventor)

ALEXANDRIA, Va., March 19 -- United States Patent no. 12,252,833, issued on March 18, was assigned to DONGGUAN FENGYI INSTRUMENT Co. LTD (Dongguan, China).

"Washing powder feeding device and feeding method thereof" was invented by Xumin Wu (Guangdong, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A washing powder feeding device includes a frame, a water pipe, a powder feeding mechanism and a vortex tube body respectively assembled on the frame. The vortex tube body is defined with a first cylindrical cavity, an intermediate truncated cone cavity and a second cylindrical cavity from top to bottom, the first cylindrical cavity has a larger diameter than the second cylindrical cavity, a water inlet is fo...