Patent ID: 6357502
Filing Date: 2002-03-19
Classification: B29D,B60B,B60C,Y10S,Y10T

Abstract:
Tire wheel for vehicles comprising a mounting rim which can be associated with a hub of said vehicle, a tire mounted on said rim and comprising a toroidal carcass provided with a crown portion connected to a pair of axially facing sidewalls terminating in beads for engagement with corresponding bead seats formed on the mounting rim, said carcass being provided with at least one reinforcing ply extending from bead to bead, with its ends fixed to reinforcing bead cores inserted inside said beads, the assembly of said tire and said rim defining a toroidal cavity which can be isolated from the surrounding environment at atmospheric pressure, and an inner tube which is inserted in said cavity and can be elastically expanded by means of the introduction of fluid under pressure into its internal volume and is provided with an inflating and deflating device which is inserted in the wall of said inner tube, wherein:said rim comprises a substantially cylindrical body, the axis of which forms the axis of rotation of said wheel, the radially external surface of said body having two side portions designed to form said bead seats for engagement with corresponding beads of said tire, each arranged according to a conical surface with its apex on said axis of rotation in a position axially outside said seat with respect to said rim, and a radially more inward central portion with a maximum diameter less than the minimum diameter of said conical side portions; said tire has a width in the region of said beads at least equal to its maximum width in the region of said sidewalls; and said inflating and deflating device located on said inner tube and having no connection to the rim; said rim being provided with an inflating valve located in a wall of said rim, where cooperation between said inflating valve and said inflating and deflating device on the inner tube allows inflation and deflation of said inner tube.