ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,491,519, issued on Dec. 9, was assigned to swissRTec AG (Altnau, Switzerland).
"Rotor part of an impact mill" was invented by Mario Zollig (Kreuzlingen, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "An enhanced operating comfort is to be achieved in a rotor part of an impact mill with a plurality of rotor tool blades detachably attachable to a blade attachment plate. This is achieved by recessing a spacer recess out of each rotor tool blade, recessing a blade holding recess and a plate spacer recess out of the blade attachment plate at each blade position, and having one spacer per rotor tool blade that can be held rotatably in the spacer re...