US Patent Issued to ZHEJIANG JIAHONG TOOLS MANUFACTURE on Jan. 27 for "Drum dredging machine for preventing tangling" (Chinese Inventors)

ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,534,895, issued on Jan. 27, was assigned to ZHEJIANG JIAHONG TOOLS MANUFACTURE Co. LTD (Lishui, China).

"Drum dredging machine for preventing tangling" was invented by Jianxin Yang (Lishui, China), Defu Ben (Lishui, China), Zhe Fang (Lishui, China) and Lei Zhang (Lishui, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A drum dredging machine for preventing tangling is provided. Which includes a flexible shaft box; a guide tube provided inside the flexible shaft box; a fixing sleeve fixed at one axial end of the flexible shaft box; an inner lining fixed at an another axial end of the flexible shaft box; a rotatable sleeve rotatably provided between ...