ALEXANDRIA, Va., July 7 -- United States Patent no. 12,672,938, issued on July 7, was assigned to RISUN TECHNOLOGY (SHENZHEN) Ltd. (Shenzhen, China).
"Water pump and oral irrigator" was invented by Jinbo Qiu (Shenzhen, China) and Dongbao Li (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are a water pump and an oral irrigator. The water pump includes: a water pump assembly, a transmission assembly and a driving member connected in sequence. The water pump assembly includes a water pump housing, a piston is embedded in the water pump housing, and a connecting rod is provided at the piston. The transmission assembly includes a first transmission seat, a first rotating wheel is provide...