ALEXANDRIA, Va., March 3 -- United States Patent no. 12,564,849, issued on March 3, was assigned to GEMA SWITZERLAND GMBH (St. Gallen, Switzerland).
"Dense phase powder pump" was invented by Felix Mauchle (Abtwil, Switzerland) and Hanspeter Vieli (Goldach, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a dense-phase powder pump for conveying coating powder from a first powder reservoir to a second downstream powder reservoir or to a downstream powder spray-coating gun or similar device for spraying coating powder. The dense-phase powder pump has at least one powder conveying chamber, which is/can be fluidically connected to the first powder reservoir via a powder inlet, a...