ALEXANDRIA, Va., June 12 -- United States Patent no. 12,297,612, issued on May 13, was assigned to TRUMER SCHUTZBAUTEN GES.M.B.H. (Obeendorf, Austria).
"Rockfall barrier" was invented by Ahren Bichler (Sechelt, Canada) and Gernot Stelzer (Kuchl, Austria).
According to the abstract* released by the U.S. Patent & Trademark Office: "A rockfall barrier for installation between an uphill side and a downhill side of a hill slope, with at least two guide devices for a net comprising an upper edge and a lower edge, and with an upper load-bearing rope, which guides the upper edge on the guide devices At least one middle rope is provided, which extends from an upper end point fixed to the upper load-bearing rope to a lower end point fixable at the ...