ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,480,564, issued on Nov. 25, was assigned to ZF Active Safety GmbH (Koblenz, Germany).
"Ball screw drive, method for producing a ball screw drive and actuator assembly having a ball screw drive" was invented by Volker Knop (Ulmen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "An actuator assembly comprises a ball screw drive having a ball screw spindle rotatably mounted about a spindle axis, on which a spindle nut is received, and a thread track on an outer circumferential surface of the ball screw spindle, has a portion of a ball return on a circumferential wall of the ball screw spindle, which return connects a beginning and an end of the thre...