ALEXANDRIA, Va., June 19 -- United States Patent no. 12,330,167, issued on June 17, was assigned to MASCHINENFABRIK KOEPPERN GMBH & Co. KG (Hattingen, Germany).
"High-pressure roller press" was invented by Eggert De Weldige (Velbert Langenberg, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A high-pressure roller press has a press frame, fixed and movable compression rollers rotatable about respective roller axes in the press frame, each having axially opposite roller ends in turn having end faces, and together forming a compaction zone with a roller gap vertically level with the roller axes and having a gap width that is variable during operation of the roller press. Two end plates axially flank the...