发明授权
- 专利标题: Resilient ballast underlayment mat including nonwoven fiber fleece layers
- 专利标题(中): 弹性压载垫,包括非织造纤维羊毛层
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申请号: US832513申请日: 1986-02-21
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公开(公告)号: US4720043A公开(公告)日: 1988-01-19
- 发明人: Hermann Ortwein
- 申请人: Hermann Ortwein
- 申请人地址: DEX Koln
- 专利权人: Clouth Gummiwerke Aktiengesellschaft
- 当前专利权人: Clouth Gummiwerke Aktiengesellschaft
- 当前专利权人地址: DEX Koln
- 优先权: DEX3506505 19850223
- 主分类号: E01B1/00
- IPC分类号: E01B1/00 ; B32B17/02
摘要:
A road bed for railway rails comprises a ballast underlayment mat in the form of a body of elastomeric material. The mat has, at its bottom, prominent projecting parts of the elastomeric material and is covered by stone ballast. At least one fiber fleece layer on the top of the mat limits penetration of the stone ballast into the elastomeric material.
公开/授权文献
- US5792486A Retainer for the die pin in an accumulator head 公开/授权日:1998-08-11