发明名称 |
SCREW DOWEL FOR FASTENING RAILS |
摘要 |
Screw dowel for concreting into a railway sleeper or ballastless track and frictionally connecting to a sleeper screw, containing a threaded portion (14) with external thread flights (18) arranged on the outside of the screw dowel (10) and with internal thread flights (19) arranged on the inside of the screw dowel; and an upper subportion (16) without external thread that is situated close to the dowel opening (26) in the installed state; the screw dowel containing two constituent parts made of different materials, namely a basic body made of plastic and a cylindrical ring (20) made of a steel material and mounted with a form fit and/or force fit.
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申请公布号 |
US2013228634(A1) |
申请公布日期 |
2013.09.05 |
申请号 |
US201113825147 |
申请日期 |
2011.09.21 |
申请人 |
BOSTERLING WINFRIED;HARRASS MICHAEL;BRESSEL DIERK;VOSSLOH WERKE GMBH |
发明人 |
BOSTERLING WINFRIED;HARRASS MICHAEL;BRESSEL DIERK |
分类号 |
E01B9/18 |
主分类号 |
E01B9/18 |
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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