Patent ID: 7216683
Filing Date: 2007-05-15
Classification: B60C,Y10T

Abstract:
1. A runflat device for a tubeless mounted assembly for a motor vehicle, comprising an asymmetrical one-piece type wheel rim comprising a drop center defined by two lateral walls and a tire cover mounted on said rim, said device being designed to be mounted in said drop center to support said tire cover following a drop in inflation pressure inside said assembly, said device comprising: a support ring divided into independent ring sectors and having two lateral faces; and an annular clamping belt adapted to bear against a radially inner bearing zone of one of said lateral faces of the ring to wedge each ring sector in said drop center; wherein said belt comprises rigid means for exerting a lateral clamping force and a radial clamping force on said bearing zone of said ring sectors, when these ring sectors and said belt are coaxially mounted in juxtaposition against said lateral walls of said drop center, so that said belt clamps said ring sectors against one of said lateral walls and against said drop center, bearing on the other lateral wall; wherein said belt comprises at least two rigid clamping zones which are respectively designed to bear on said bearing zone and on said other lateral wall by circumferentially tensioning a flexible connecting zone comprised in said belt and which connects said clamping zones together.