AIR TIRE COVER Russian patent published in 2012 - IPC B60C9/20 

FIELD: transport.

SUBSTANCE: invention relates to automotive tires, particularly, to truck radial tires. Proposed cover comprises tread, breaker composed of metal cord and textile layers, carcass, side strips, and bead rings. Metal cord diameter is 0.81-0.90 mm. Metal cord made up of metal threads of equal diameter of 0.31-0.33 mm. Relationship between metal cord spacing in rubberised breaker layer and metal cord diameter makes 1.55-2.22 while linear density of metal cord equals 2.35-2.70 g/m. Note here that relationship between every metal cord rubberized layer in breaker and metal cord diameter makes 1.39-1.74. Note also that thickness of every metal cord rubberised layer in breaker is 1.2-1.5 mm while metal cord tensile strength is not lower than 885±5N.

EFFECT: higher tensile strength and linear density.

2 dwg