ALEXANDRIA, Va., July 23 -- United States Patent no. 12,366,293, issued on July 22, was assigned to AIGI ENVIRONMENTAL INC. (Nanjing, China).
"Mechanical sealing device for sealing liquid" was invented by Jingwei Zhao (Nanjing, China) and Jun Zhang (Nanjing, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A mechanical sealing device includes rotating and stationary rings, and rotating and stationary ring adaptors mounted around a rotating shaft. An end surface of the rotating ring adjoins an end surface of the stationary ring by means of springs. The sealing interface includes an adjoining point that is in contact with a liquid medium in an axial section of the device, and an annular peripheral rim surr...