US Patent Issued to Sulzer Management on Nov. 25 for "Multistage centrifugal pump for pumping fluid, an impeller/ shaft assembly and a method for assembling an impeller/ shaft assembly" (Finnish Inventor)

ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,480,494, issued on Nov. 25, was assigned to Sulzer Management AG (Wintherthur, Switzerland).

"Multistage centrifugal pump for pumping fluid, an impeller/ shaft assembly and a method for assembling an impeller/ shaft assembly" was invented by Jouni Vartiainen (Kotka, Finland).

According to the abstract* released by the U.S. Patent & Trademark Office: "A multistage centrifugal pump for pumping fluid includes a pump housing having a fluid inlet and a fluid outlet and a flow channel between the inlet and the outlet in the housing. The pump housing includes a number of pumping stages. A shaft is mounted by bearings for rotation about a center axis, and a number of impellers each including...