US Patent Issued to BEIJING GRAND HITEK. on Sept. 1 for "Vacuum pump assembly with improved process by-product holding capacity" (Chinese Inventors)

ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,723,588, issued on Sept. 1, was assigned to BEIJING GRAND HITEK. Co. LTD. (Beijing).

"Vacuum pump assembly with improved process by-product holding capacity" was invented by Min Wei (Beijing), Xiaohong Lei (Beijing), Xiaobo Lei (Beijing) and Chong Peng (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a vacuum pump assembly with an improved process by-product holding capacity, including a front bearing plate (1), an upper casing (2), a lower casing (3), a long rotor (4), a short rotor (5), and a rear bearing plate (6); the long rotor (4) and the short rotor (5) rotate about their respective rotary shafts in opposing directions, axes o...