ALEXANDRIA, Va., April 21 -- United States Patent no. 12,606,999, issued on April 21, was assigned to Nanjing Chervon Industry Co. Ltd. (Nanjing, China).
"Drain auger" was invented by Tongle Huo (Nanjing, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A drain auger includes a drum, a motor, and a cable. The drum forms an accommodation space. The motor drives the drum to rotate. The cable is at least partially stored in the accommodation space. The total length of the extended cable has a cable length L, the drum has an inner bottom surface forming the accommodation space, the diameter of the inner bottom surface is the first diameter D, and, when the cable length L and the first diameter D are both mea...