ALEXANDRIA, Va., June 17 -- United States Patent no. 12,312,201, issued on May 27, was assigned to SSM Scharer Schweiter Mettler AG (Wadenswil, Switzerland).

"Slot drum for a winding machine and winding machine" was invented by Martin Kuttel (Gattikon ZH, Switzerland) and Andre Wandeler (Samstagern, Switzerland).

According to the abstract* released by the U.S. Patent & Trademark Office: "A slot drum for a winding machine for traversing a yarn has a drum body including a first half and an adjacent second half, the drum body held in a rotationally fixed manner on a drum shaft. The adjacent first and second halves defining a yarn guide slot that extends around the drum body. The first and second halves include a side shield, a cylindrical ja...