ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,523,204, issued on Jan. 13, was assigned to ProMinent GmbH (Heidelberg, Germany).
"Metering diaphragm pump comprising a protective membrane" was invented by Jorg Maltry (NuBloch, Germany) and Marc Mohr (Mannheim, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A metering diaphragm pump includes a metering chamber, a working chamber and a metering membrane. The metering chamber and the working chamber are separated from one another by the metering membrane. A device for moving the metering membrane back and forth between a first and a second position is provided. The volume of the metering chamber is smaller in a first position than in the second ...