ALEXANDRIA, Va., June 25 -- United States Patent no. 12,338,599, issued on June 24, was assigned to Pier Tech Systems LLC (Chesterfield, Mo.).
"Foundation support systems, assemblies and methods including sleeve coupler and shafts with torque transmitting profiled distal end edges" 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: "Coupled shaft assemblies for a foundation support system include shafts provided with profiled distal end edges that may be directly engaged to one another to realize an interlocking torque transmitting relationship with one another along a curved engagement surface. A coupler sleeve may snugly recei...