ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,717,062, issued on Aug. 25.
"Telescopic tube assembly with limited rotation for metal detector" was invented by Maoquan Deng (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The application disclosed a telescopic tube assembly with limited rotation and a metal detector. The telescopic assembly includes an outer tube and an inner tube slidably connected inside the outer tube. One end of the inner tube is fixedly sleeved with a positioning ring having a sliding groove. The outer tube wall has a positioning strip extending axially, with one end extending to the outer tube end, the other end forms a rotation space with axial distance no less ...