Patent ID: 6564842
Filing Date: 2003-05-20
Classification: B60C

Abstract:
A run flat safety support intended to be mounted on a wheel rim inside a tire equipping a vehicle for supporting the tire tread in case of loss of inflation pressure, comprising:a generally cylindrical base intended to fit around the rim; a generally cylindrical crown intended to come in contact with the interior of the tire tread in the event of the loss of inflation pressure, and leaving a clearance from the tire tread interior at nominal pressure; an annular body connecting the base and the crown, the annular body including a circumferentially continuous support member having a circumferential median plane P; and the support member including a plurality of partitions extending axially on both sides of the circumferential median plane and distributed about the circumference of the support member, and connecting members extending generally circumferentially and joining the two laterally adjacent ends of circumferentially adjacent partitions, the connecting members being successively arranged alternately on both sides of the partitions, and wherein the ratio between the thickness of the partitions in their central part H to the thickness in the lateral ends thereof h is greater than 1.1, in order to reinforce the buckling resistance under a radial load of the annular body.