ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,696,836, issued on Aug. 4.
"Four-armed lawnmower blade in same cutting plane from a single metal sheet" was invented by Mark Lee Thompson (Thomasville, N.C.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A lawnmower blade stamped or laser cut from a single metal sheet arranged as four blade arms of equal length on a single cutting plane that can resemble a cruciform shape. This design yields a uniform strength and reliability and does not rely on nuts, bolts, and multipart construction, and with minimal effect on overall weight. Each blade extends outward from a center mounting, possesses an offset, a sharpened leading edge and oppositely a deflection po...