ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,434,946, issued on Oct. 7, was assigned to LIFTRA IP APS (Aalborg, Sweden).
"Rotor blade hoisting system and method of installation and/or deinstallation of a rotor blade" was invented by Per Eske Fenger (Terndrup, Denmark).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hoisting system includes an upper cable support system to be mounted on a top end of a wind turbine, a lower cable support system at a lower end of the wind turbine, and left and right cables extended between the cable support systems. A clamping yoke arranged approximately at the centre of gravity of a rotor blade includes left and right climbing systems adapted to climb on the cables w...