发明公开
- 专利标题： Improvements in the beads of pneumatic tires for vehicle wheels
- 专利标题（中）： 车轮充气轮胎胎圈的改进
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申请号： EP88106721.9申请日： 1988-04-27
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公开(公告)号： EP0288986A2公开(公告)日： 1988-11-02
- 发明人: Maiocchi, Luigi
- 申请人： PIRELLI COORDINAMENTO PNEUMATICI Società per Azioni
- 申请人地址： Piazzale Cadorna, 5 I-20123 Milan IT
- 专利权人： PIRELLI COORDINAMENTO PNEUMATICI Società per Azioni
- 当前专利权人： PIRELLI COORDINAMENTO PNEUMATICI Società per Azioni
- 当前专利权人地址： Piazzale Cadorna, 5 I-20123 Milan IT
- 代理机构： Giannesi, Pier Giovanni
- 优先权： IT2029387 19870428
- 主分类号： B60C15/04
- IPC分类号： B60C15/04
摘要：
The metal core used for reinforcing tire beads is constituted by a plurality of coils of wire (16), (17), (18), axially arranged side-by-side and radially superimposed, in which the wire has a straight section of modular shape with two equal and parallel opposite sides (1), (2), the profiles (15) connecting the corresponding ends of the opposite sides having a distance, from the axis of said pair of sides, whose value varies from one side to the other, said variation comprising at least one inversion of value along the development of the profile.
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