Patent ID: 6986244

Claim:
Open-end spinning rotor, which—beginning at an open front side—comprises walls, one after the other, in the form of a lateral wall and in the form of a rotor base, comprising an inner contour bordering the lateral wall, which inner contour widens conically beginning from the open front side up to a fiber collecting groove, which has the largest inner diameter, also comprising an outer contour bordering the lateral wall, which outer contour increases in diameter from the open front side to its largest outer diameter size which is located in the area of the fiber collecting groove, also comprising the walls having different thicknesses, of which the wall thickness in the area of the fiber collecting groove is the thinnest, while the wall thickness of the lateral wall is thinner than that of the rotor base, wherein the outer contour of the lateral wall—in axial section—is at least partly convex-shaped, and wherein the thickness of the wall is increased by a curved widening contour.