US Patent Issued to AIGI ENVIRONMENTAL on May 26 for "Cartridge sealing device with semi-solid mud filler and configured to be mounted to fluid equipment" (Chinese Inventors)

ALEXANDRIA, Va., May 26 -- United States Patent no. 12,638,083, issued on May 26, was assigned to AIGI ENVIRONMENTAL INC. (Jiangsu, China).

"Cartridge sealing device with semi-solid mud filler and configured to be mounted to fluid equipment" was invented by Jingwei Zhao (Nanjing, China) and Jun Zhang (Nanjing, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The application relates to a cartridge sealing device comprising a shaft sleeve, a locking ring, a shaped sealing ring assembly comprising first and second shaped sealing rings, a semi-solid mud filler, a cylindrical main gland forming a cylindrical space with the shaft sleeve and having a threaded joint, an annular auxiliary gland, a support frame c...