Run flat system having a spring suspension

A run flat device configured to be fitted to a tubeless mounted wheel assembly for a motor vehicle, which comprises a wheel rim and a tire cover comprising beads mounted against edges of the rim, the run flat device comprising:

• an annular supporting structure which is configured to be mounted around the rim so as to support the cover following a drop in inflating pressure inside the mounted wheel assembly, comprising:
• at least one composite spring segment assembled circumferentially around the rim having at least one extended end;
• at least one elliptical spring shaped for the incorporation of multiple at least one elliptical springs to be installed under the composite spring segment, such that the at least one composite spring segment is assembled circumferentially around the rim by fixing the extended end of the at least one composite spring segment to the at least one elliptical spring;
• and
• an arrangement for locking the beads against the edges which are configured to connect the annular supporting structure to these beads;
• wherein the at least one elliptical spring is formed in tension and is compressed following a drop in inflating pressure inside the mounted assembly.

A runflat device configured to be fitted around a wheel rim and within a tire cover, the runflat device comprising:

• an annular supporting structure which is configured to be mounted around the wheel rim so as to support the tire cover following a drop in inflating pressure inside the mounted assembly comprising:
• at least one composite spring element assembled circumferentially around the rim having at least one extended end;
• a plurality of elliptical springs such that each of said at least one composite spring element is assembled circumferentially around a plurality of elastic springs by fixing said plurality of elliptical springs to a bottom surface of the composite structure;
• and
• wherein said plurality of elliptical springs are formed in tension and are compressed following a drop in inflating pressure inside the mounted assembly.