US Patent Issued to Zero3 Key on Aug. 12 for "Variable-pitch impeller for wind turbines defined by a sliding ring" (Italian Inventors)

ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,385,464, issued on Aug. 12, was assigned to Zero3 Key S.r.l. (Sasso Marconi BO, Italy).

"Variable-pitch impeller for wind turbines defined by a sliding ring" was invented by Marco Antonini (Sasso Marconi BO, Italy) and Francesca Sandrini (Sasso Marconi BO, Italy).

According to the abstract* released by the U.S. Patent & Trademark Office: "An impeller for wind turbines comprises a rear ring having a central axis. The impeller comprises a front ring having an inner peripheral surface. The front ring is arranged coaxially and is slidably associated with the rear ring. The front ring is movable along the central axis and switches between a close configuration and a spaced apart configura...