US Patent Issued to Hilti on Dec. 16 for "Separate screw thread helix fixed by means of claws" (Swiss, Austrian, German Inventors)

ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,497,990, issued on Dec. 16, was assigned to Hilti AG (Schaan, Liechtenstein).

"Separate screw thread helix fixed by means of claws" was invented by Roland Schneider (Schlins, Austria), Florian Zielbauer (Ruthi, Switzerland), Christian Gebauer (Altstatten, Switzerland) and Guenter Domani (Weissensberg, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A screw including a shank, at least one screw thread, which is arranged on the shank, winds around the shank and protrudes from the shank, and a separate helix element, which is arranged non-monolithically on the shank, wherein the separate helix element winds around the shank, protrudes from the shank...