US Patent 11067155 Spindle drive for curved path of movement

A spindle drive assembly includes a threaded spindle rotatable about a spindle axis; a threaded spindle nut disposed on the threaded spindle and configured to travel along the spindle axis via a rotation of the spindle; a ball stud attached to the spindle nut, the ball stud extending radially away from the spindle nut; an attachment plate configured to be attached to a part to be moved; and a ball socket connected to the attachment plate and having a cavity dimensioned for receiving the ball stud. The cavity of the ball socket has a first diameter in a direction perpendicular to the spindle axis and a second diameter parallel to the spindle axis, wherein the first diameter is greater than the second diameter.