ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,392,103, issued on Aug. 19, was assigned to Pier Tech Systems LLC (Chesterfield, Mo.).

"Snap lock, anti-reverse rotation coupler assembly for foundation support system" was invented by Kevin Kaufman (Des Peres, Mo.) and Michael D. Wilkis (Ellisville, Mo.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A coupled shaft assembly for a foundation support system includes inner and outer couplers with mating helical ribs and grooves, and spring element that resiliently interlocks the inner and outer couplers in an axial direction. Built-in anti-reverse rotation elements in each coupler accommodates a limited degree of relative rotation of the couplers and ther...