US Patent Issued to LIFTRA IP on April 21 for "Method of performing service work on a horizontal axis wind turbine" (Danish Inventor)

ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,168, issued on April 21, was assigned to LIFTRA IP APS (Aalborg, Denmark).

"Method of performing service work on a horizontal axis wind turbine" was invented by Per Eske Fenger (Terndrup, Denmark).

According to the abstract* released by the U.S. Patent & Trademark Office: "A wind turbine (1) has three wind turbine blades (61, 62, 63), each being arranged rotatably on the rotor hub (5) about a pitch axis in order to adjust a pitch angle of the wind turbine blade. Before performing the service work, a pitch angle adjustment is performed so that a pitch angle difference between respective pitch angles of two of the wind turbine blades is between 45 degrees and 135 degrees or betwee...