发明名称 |
Multi-layered sealing element |
摘要 |
The present invention is directed to a sealing element which comprises at least a spirally rolled, film-like material made of expanded polytetrafluoroethylene (ePTFE), the sealing element over its cord cross-section having a density gradient which increases, starting from the outer side of the sealing element, in the direction towards the center of its cross-section. Furthermore, the present invention provides a sealing element which has a second annular formation which is connected to the first annular formation by means of a flexible-tube-like intermediate region made of the same film-like material. The two annular formations may also be arranged at a predetermined distance from one another.
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申请公布号 |
US6032960(A) |
申请公布日期 |
2000.03.07 |
申请号 |
US19970926014 |
申请日期 |
1997.09.10 |
申请人 |
WENDL, MANFRED;GANTNER, JOSEF |
发明人 |
WENDL, MANFRED;GANTNER, JOSEF |
分类号 |
B29C53/32;B29C53/56;B29C53/58;B29C57/12;B29C67/04;B29D99/00;F16J15/10;F16L23/16;(IPC1-7):H02G15/013 |
主分类号 |
B29C53/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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