Tyre with retracting spikes - on flexible mountings extended by additional tyre pressure to negotiate icy roads,申请号DE19782809145-传众专利搜索

Tyre with retracting spikes - on flexible mountings extended by additional tyre pressure to negotiate icy roads

申请公布号：DE2809145(A1)

申请号：DE19782809145

申请日期：1978.03.03

申请公布日期：1979.09.13

申请人：

METZINGER,ERICH

发明人：METZINGER,ERICH

分类号：B60C11/16;(IPC1-7):60C11/16

主分类号：B60C11/16

摘要：<p>The retracting spikes for the tyre have a hardened steel shaft with a widened base located in a blind hole in the tread. The base of the hole is flexible and can be raised by additional tyre pressure. This extends the spikes, for use on icy roads. The extension can be controlled by a double walled tread with the intermediate space filled with compressed air to extend the spikes, and without having to alter the tyre pressure. The system has no external control mechanism and enables the tyre to be used on normal roads with the spikes retracted.</p>