ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,472,517, issued on Nov. 18, was assigned to GEMA SWITZERLAND GMBH (Gossau, Switzerland).
"Dense-phase powder pump for conveying powder-type materials" was invented by Erich Sutter (St. Gallen, Switzerland) and Marco Sanwald (Abtwil, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "A dense-phase powder pump for conveying powder has at least one powder conveying chamber with a gas-permeable filter element that has at least regions thereof accommodated in a casing body and at least one pinch valve that is or can be connected to an end region of the powder conveying chamber. In particular, the dense-phase powder pump has a pinch valve housing form...