US Patent Issued to Sulzer Management on July 28 for "Multistage centrifugal pump" (Swiss Inventor)

ALEXANDRIA, Va., July 28 -- United States Patent no. 12,692,868, issued on July 28, was assigned to Sulzer Management AG (Winterthur, Switzerland).

"Multistage centrifugal pump" was invented by Arnaldo Rodrigues (Winterthur, Switzerland).

According to the abstract* released by the U.S. Patent & Trademark Office: "A multistage pump for conveying a fluid includes an outer pump housing, at least first and last stages arranged in the outer pump housing. Each stage includes a stage casing, an impeller, and a diffusor. A pump inlet supplies the fluid to the impeller of the first stage and, a pump outlet discharges the fluid. Each impeller is mounted to a pump shaft in a torque proof manner, and the impellers are arranged one after another on th...