| 摘要 |
1,250,567. Aircraft tyres. PNEUMATIQUES, CAOUTCHOUC MANUFACTURE ET PLASTIQUES KLEBER-COLOMBES. 26 Feb., 1969 [1 March, 1968], No. 10400/69. Heading B7C. An aircraft tyre comprises a toroidal carcass 10, a patterned tread layer 11 of rubbery material bonded to the carcass, and a cutprotective breaker 15 within the tread layer below the tread pattern and spaced from the carcass by a constant thickness layer of the tread material. The breaker comprises two superposed layers of metal cables having an elastic elongation of at least 15% calendered with a rubbery mixture of modulus of elasticity of at least 100 kg./cm.<SP>2</SP> with 200% elongation, the cables of each layer being oriented obliquely to the tyre's mid-circumferential plane with the cables of one layer symmetrically crossing those of the other layer. The thickness of the rubber coating is preferably equal on both sides of each cable layer, but may be different, in which case the two layers are superimposed with the thinner coverings in mutual contact. Preferably the cable diameter is between 0À8 and 1À2 mm. and the cables are spaced apart at between 7 and 10 to the inch. There may be a textile reinforcing layer radially outwardly of the breaker and undulating in the tread pattern. |
