ALEXANDRIA, Va., July 16 -- United States Patent no. 12,359,388, issued on July 15, was assigned to Pier Tech Systems LLC (Chesterfield, Mo.).
"Tapered, locking, anti-reverse 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 conical-shaped inner and outer couplers with mating helical ribs and grooves, and an anti-reverse element extending through different shaped openings in the inner and outer couplers that accommodates a limited degree of relative rotation of the couplers and thereafter precludes further relative...