ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,454,940, issued on Oct. 28.
"Savonius wind turbine ratios" was invented by Mark Daniel Farb (Beit Shemesh, Israel).
According to the abstract* released by the U.S. Patent & Trademark Office: "A Savonius wind turbine has been noted in the past to have the capability to perform more efficiently than other drag-type vertical axis turbines when built according to certain parameters. The previous literature has missed seeing the ratio of the shaft diameter to the available space for wind to pass through in the center as the crucial relationship on which other improvements in this type of turbine can be built. The chord diameter and overlap distance all depend on the size of the central sh...