Abstract: A wheel holder for fastening to a wheel comprises at least two arms extending outward from a base plate of the wheel holder radially; each of the arms having at least one movable element that is movable radially; a central rotation element that is arranged in the center of the wheel holder such that it can rotate; and at least two coupling elements each extending between one of the movable elements and the central rotation element such that the movable elements are movable radially by rotation of the rotation element. The rotation element is attached to the base plate of the wheel holder via a freewheeling system. The freewheeling system has at least one operating state in which the rotation element is rotatable in a freewheeling direction and rotation of the rotation element in a blocking direction opposite to the freewheeling direction is blocked.

Abstract: A wheel holder (2) for fastening to a wheel (1), in particular to a wheel (1) of a motor vehicle, comprises at least two arms (22, 23, 24) extending outward from a center (28) of the wheel holder (2) in a radial direction; each of the arms (22, 23, 24) having at least one movable element (32, 33, 34) that is movable in the radial direction; a rotation element (40) that is arranged in the center (28) of the wheel holder (2) such that it can rotate; at least two coupling elements (52, 53, 54) each extending between one of the movable elements (32, 33, 34) and the central rotation element (40) such that the movable elements (32, 33, 34) are movable in the radial direction by rotation of the rotation element (40); and at least one drive device (63, 64) which is connected to one of the movable elements (32, 33, 34) via a force transmitting element (73, 74) and which is designed to apply, via the force transmitting element (73,74), a force to the movable element (32, 33, 34) that is directed towards the center (28)

Abstract: A wheel holder (1) for clamping attachment to a wheel (9), in particular to a wheel (9) of a motor vehicle, and for attaching a target (5) for vehicle wheel alignment measurement, comprises a base body (10) having a central portion and at least two, in particular three, arms (22, 23, 24) extending radially outwards from the central portion of the base body (10). Each of the arms (22, 23, 24) has a movable element (32a, 33a, 34a) which is movable relative to the base body (10) in the radial direction in order to vary the length of the arm (22, 23, 24) in the radial direction; a pressure element (52, 53, 54), in particular a compression spring, which is arranged and adapted to push the movable element (32a, 33a, 34a) outward in radial direction; and a traction element (62, 63, 63) mechanically coupled to the moveble element (32a, 33a, 34a) and arranged and adapted to pull the movable element (32a, 33a, 34a) inward in radial direction.

Abstract: A wheel holder (1) for clamping attachment to a wheel (9), in particular to a wheel (9) of a motor vehicle, and for attaching a target (5) for vehicle wheel alignment measurement, comprises a base body (10) having a central portion and at least two, in particular three, arms (22, 23, 24) extending radially outwards from the central portion of the base body (10). Each of the arms (22, 23, 24) has a movable element (32a, 33a, 34a) which is movable relative to the base body (10) in the radial direction in order to vary the length of the arm (22, 23, 24) in the radial direction; a pressure element (52, 53, 54), in particular a compression spring, which is arranged and adapted to push the movable element (32a, 33a, 34a) outward in radial direction; and a traction element (62, 63, 63) mechanically coupled to the moveble element (32a, 33a, 34a) and arranged and adapted to pull the movable element (32a, 33a, 34a) inward in radial direction.

Abstract: A wheel holder (2) for fastening to a wheel (1), in particular to a wheel (1) of a motor vehicle, comprises at least two arms (22, 23, 24) extending outward from a center (28) of the wheel holder (2) in a radial direction; each of the arms (22, 23, 24) having at least one movable element (32, 33, 34) that is movable in the radial direction; a rotation element (40) that is arranged in the center (28) of the wheel holder (2) such that it can rotate; at least two coupling elements (52, 53, 54) each extending between one of the movable elements (32, 33, 34) and the central rotation element (40) such that the movable elements (32, 33, 34) are movable in the radial direction by rotation of the rotation element (40); and at least one drive device (63, 64) which is connected to one of the movable elements (32, 33, 34) via a force transmitting element (73, 74) and which is designed to apply, via the force transmitting element (73,74), a force to the movable element (32, 33, 34) that is directed towards the center (28)

Abstract: A wheel holder for fastening to a wheel comprises at least two arms extending outward from a base plate of the wheel holder radially; each of the arms having at least one movable element that is movable radially; a central rotation element that is arranged in the center of the wheel holder such that it can rotate; and at least two coupling elements each extending between one of the movable elements and the central rotation element such that the movable elements are movable radially by rotation of the rotation element. The rotation element is attached to the base plate of the wheel holder via a freewheeling system. The freewheeling system has at least one operating state in which the rotation element is rotatable in a freewheeling direction and rotation of the rotation element in a blocking direction opposite to the freewheeling direction is blocked.