US Patent Issued to ALFA LAVAL CORPORATE on Feb. 18 for "Rotary positive displacement pump with a guard" (British Inventor)

ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,228,133, issued on Feb. 18, was assigned to ALFA LAVAL CORPORATE AB (Lund, Sweden).

"Rotary positive displacement pump with a guard" was invented by Simon Cargill (Eastbourne, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A rotary positive displacement pump comprises a transmission housing having front and rear walls and rotationally supporting first and second drive shafts having constantly meshing gears such that the drive shafts rotate in opposite directions. A rotor casing connected to a front side of the housing has rear and front walls and a circumferential side wall defining an interior pumping cavity. The casing houses first and s...