发明名称 |
TOOL FOR LONGITUDINALLY SUBDIVIDING SEWER PIPES |
摘要 |
The invention relates to a tool for longitudinally subdividing buried sewer pipes having an asymmetric, generally oval cross section, made substantially of a support shoe opposing a cutting blade acting in the direction of the pipe axis. The device also has two side cutting blades and is moved through the old pipe by means of a rod and a cylindrical calibration mandrel.
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申请公布号 |
US2011150577(A1) |
申请公布日期 |
2011.06.23 |
申请号 |
US20090936958 |
申请日期 |
2009.04.02 |
申请人 |
TRACTO-TECHNIK GMBH & CO. KG |
发明人 |
KOCH ELMAR;KOEPER MARTIN;HEIMES MICHAEL;SCHWARZER SEBASTIAN |
分类号 |
F16L55/18 |
主分类号 |
F16L55/18 |
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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