Patent ID: 7264031

Claim:
A safety support for supporting at least partially a tread of a tire in conditions of low or zero pressure, comprising: a ring which is intended to be mounted on a rim of a wheel inside a tire and which is subdivided into at least two arced segments having ends which face one another, and a plurality of linking means which each connect two ends facing one another of two segments of the ring, at least one of the linking means comprising at least one male element at an end of one segment and at least one female portion at an end of another segment and suitable for receiving the male element via a relative movement of the two segments one relative to the other in a circumferential direction of the ring, wherein at least one linking means also comprises a lever mechanism comprising at least two link arms of different lengths that are articulated on one another and each at a respective end of the two segments to be connected to one another by shafts parallel to the geometric axis of the ring, the lever mechanism acting so as to bring the two facing ends of the two segments closer to one another when the male element is partially engaged in the female portion and when an articulation common to two link arms of the lever mechanism is moved substantially radially relative to the center of the ring in response to contact of said articulation with the rim during an axial movement of the ring relative to the rim.