ALEXANDRIA, Va., March 12 -- United States Patent no. 12,247,587, issued on March 11, was assigned to Weir Minerals Australia Ltd (Australia).

"Pump apparatus for reducing the size of suspended solids before pumping" was invented by Cesar Calma (Artarmon, Australia) and Hugh Duong (Artarmon, Australia).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a pump apparatus for reducing the size of suspended solids in a fluid prior to pumping the fluid through a pump, comprising: a processing chamber having an inner side wall, the inner side wall comprising one or more formations adapted to reduce the size of suspended solids in the fluid; an inlet to the processing chamber having a di...