A system for positioning a vehicle chassis in which tires are mounted on an axle associated with the chassis is provided. The system includes first and second tire guides spaced apart from one another in which the first and second tire guides are configured to opposedly face one another. The system further includes tire guide sections joined to form each of the first and second tire guides. Each tire guide section is adjustable within a range such that a distance between opposing tire guide sections may be adjusted. The tire guide sections are adjusted based on the position of the tires mounted on the axle associated with the chassis.

A turn plate assembly for support of the steered wheels of a vehicle on a precision planar surface. The assembly includes an approach plate establishing a planar surface to within an established measurement tolerance. The approach plate is coupled to a base plate underlying a bearing assembly consisting of a plurality of ball bearings retained between the base plate and an underside of a rotating support disc. An upper surface of the rotating support disc is coplanar with an upper surface of the approach plate. Resting on the upper surface of the rotating support surface, a translational surface or mat is temporarily secured in place by magnetic adhesion. During use, translational forces exerted on the translation surface or mat by a vehicle wheel assembly may overcome the magnetic adhesion, enabling the translational surface or mat to translate relative to the underlying rotating support disc.

A skate blade sharpening system retains a skate blade in a sharpening position whose centerline has a first location relative to a first visual reference feature. A motor-driven rotating shaft has a wheel-mounting location for mounting a grinding wheel for sharpening operation. The shaft accepts an alignment wheel at the wheel-mounting location during an alignment, the alignment wheel having a second visual reference feature having a second location relative to a centerline of the grinding wheel when occupying the wheel-mounting location. An adjustment mechanism moves the shaft transversely during alignment to vary relative position between the wheel-mounting location and the sharpening position including an aligned position in which the centerline of the grinding wheel is aligned with the centerline of the sharpening position, the aligned position being indicated by alignment of the first visual reference feature with the second visual reference feature during alignment.

A skate blade sharpening system retains a skate blade in a sharpening position whose centerline has a first location relative to a first visual reference feature. A motor-driven rotating shaft has a wheel-mounting location for mounting a grinding wheel for sharpening operation. The shaft accepts an alignment wheel at the wheel-mounting location during an alignment, the alignment wheel having a second visual reference feature having a second location relative to a centerline of the grinding wheel when occupying the wheel-mounting location. An adjustment mechanism moves the shaft transversely during alignment to vary relative position between the wheel-mounting location and the sharpening position including an aligned position in which the centerline of the grinding wheel is aligned with the centerline of the sharpening position, the aligned position being indicated by alignment of the first visual reference feature with the second visual reference feature during alignment.

This invention improves the process of using automotive wheel alignment toe plates to perform wheel alignment by measuring from the wheel of the vehicle instead of the tire as is standard with toe plates measurement. The result of this new invention is the elimination of the tire as a source of error.

This invention improves the process of using automotive wheel alignment toe plates to perform wheel alignment by measuring from the wheel of the vehicle instead of the tire as is standard with toe plates measurement. The result of this new invention is the elimination of the tire as a source of error.

An alignment adjustment device includes an actuator that is fixed to a vehicle body side support member and that is connected to an outer peripheral surface of a hub carrier so as to rotate the hub carrier. An intersection between a first axis and a second axis and an intersection of a universal joint are both positioned inside a wheel, and the intersection of the universal joint is inside the hub carrier.

A device for measuring the geometry of a wheel axle of a motor vehicle comprising a wheel hub support for defined positioning of a wheel hub of the wheel axle. The wheel hub support comprises a wheel hub dome formed correspondingly to an outer side of the wheel hub and encompassing the wheel hub dome in a precise fit.

A device for measuring the geometry of a wheel axle of a motor vehicle comprising a wheel hub support for defined positioning of a wheel hub of the wheel axle. The wheel hub support comprises a wheel hub dome formed correspondingly to an outer side of the wheel hub and encompassing the wheel hub dome in a precise fit.

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.