ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,447,065, issued on Oct. 21, was assigned to Ruggli AG (Koblenz, Switzerland).
"Method for winding preforms" was invented by Samuel Schuler (Basel, Switzerland) and Marco Auer (Leibstadt, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for winding preforms for the manufacture of tampons feeds a material tape. Strips in the form of tapes are separated from this material tape and pushed into a continuously rotating winding drum by at least one drive roller in such a way that the strip is positioned between a winding fork and a guide bar such that when the winding fork moves around the guide bar, the latter pushes a section of the strip ...