ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,378,965, issued on Aug. 5, was assigned to CHANGSHA DEWATER MECHANICAL TECHNOLOGY CO LTD. (Changsha, China).
"Mobile emergency water supply and drainage device" was invented by Wei Geng (Changsha, China), Yinglai Zhou (Changsha, China) and Panli Zhang (Changsha, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A mobile emergency water supply and drainage device is provided, which relates to the technical field of emergency rescue and disaster relief equipment. The device includes a submersible pump, relay pumps, and an electric power supply device for providing electric power for the submersible pump and the relay pumps. Frequency conversion control ...