Patent ID: 6321808
Filing Date: 2001-11-27
Classification: B29D,B60C,Y10T

Abstract:
A run flat pneumatic tire including an elastomeric casing with a tread formed in a crown portion thereof and sidewalls extending from the crown portion to generally circular beads; a first thin annular run flat band fixed in the crown portion of the tire radially inwardly of said tread having an axial width extending between a pair of end edges and having a radial thickness measured between inner and outer circumferential surfaces, said band being formed with at least one cut extending between the inner and outer surfaces through the band thickness and extending in a circumferential generally helical direction across the band width from edge-to-edge with the arcuate length of the cut relative to the band circumference being in the range of between 270.degree. and 450.degree. providing a circumferential expandable band.