Patent ID: 8231279
Filing Date: 2012-07-31
Classification: F16C

Abstract:
1. A supporting unit for supporting axle-shafts of go-karts, the supporting unit comprising: an adjustable support comprising an annular body having a longitudinal axis extending therethrough and having an adjustable perimeter including a radial slit that extends longitudinally along a longitudinal extension of the annular body and defines a circumferential gap, the annular body having a cross-section parallel to the longitudinal axis that defines a concave seat disposed on an inner surface the annular body, and having an axis of adjustment transverse to the longitudinal axis and extending across the gap of the radial slit; and a rolling bearing having an axis of rotation transverse to the axis of adjustment and coplanar with respect to the longitudinal axis, the bearing comprising an outer ring having a cross-section parallel to the longitudinal axis that defines a convex outer surface, the rolling bearing being concentrically mounted within the concave seat so as to be adjustable about the axis of adjustment and such that the relative angle between the axis of rotation and the longitudinal axis of the support is adjustable; and tightening means for tightening the support on the bearing by reducing said perimeter and the gap of the radial slit and locking the bearing in an operative position, the outer ring including at least one sharp edge formed on the convex outer surface and annularly extending about said axis of rotation, the ring having a hardness such that each sharp edge is configured to cut into a softer material of the concave seat so as to prevent any rotation of the bearing about the axis of adjustment in said operative position, the ring further having an annular undercut groove adjacent to each sharp edge for enabling a cold plastic deformation of the material of the concave seat into the groove to fix the outer ring in said operative position.