ALEXANDRIA, Va., June 16 -- United States Patent no. 12,305,311, issued on May 20, was assigned to Maschinenfabrik Rieter AG (Winterthur, Switzerland).
"Fiber preparation machine" was invented by Christian Griesshammer (Berlingen, Switzerland), Tobias Wolfer (Altnau, Switzerland) and Petr Cevona (Usti nad Orlici, Czech Republic).
According to the abstract* released by the U.S. Patent & Trademark Office: "A fiber preparation machine for processing fiber material includes a store or filling chute for storing the fiber material before or after processing. A camera is directed into an interior of the store or filling chute, the camera having an optical axis oriented at an angle (Alpha) with respect to a vertical axis that is perpendicular to ...