| 摘要 |
1,240,382. Tyre cord construction. BRIDGESTONE TIRE K.K., and KOBE SEIKOSHO K.K. 7 March, 1969 [9 July, 1968], No. 12321/69. Heading B7C. [Also in Divisions D1 and D2] A steel cord for reinforcing tyres comprises four strands 2 twisted together in a direction opposite to the direction of twist of the filaments 1 in each strand, each strand 2 comprising seven filaments 1 all of the same diameter, the four strands being so arranged that there is a central cavity 3 between the strands and such that the centres of the four strands are located at corners of a rectangle formed by imaginary lines extending beween the centres of the four strands. |
