ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,544,789, issued on Feb. 10, was assigned to ALLU Innovation and Research Center Oy (Pennala, Finland).
"Vibrating screen for screening aggregates and/or soils" was invented by Hannu Kainulainen (Pennala, Finland) and Markku Jonninen (Lohilahti, Finland).
According to the abstract* released by the U.S. Patent & Trademark Office: "A vibrating screen for screening aggregates and/or soils. The screen includes a body, a chute shaped stationary screening deck, fixed to the body by its opposite ends. The stationary screening deck includes stationary screening flat bars, which form first screening slots between them, which have a curved shape corresponding to the shape of the stationary scre...