发明名称 |
Quiet sewage piping to reduce sound transmission and radiation |
摘要 |
Waste water piping, or tubular mouldings, e.g. pipe fittings suitable for sewerage systems, are extruded, injection moulded or blow-moulded. They are made of polyolefin or polystyrene, incorporating an additive to reach a density of 1.4 - 2.7 g/cm<3>. The tubes or tubular mouldings have an original combination of properties, i.e. the wall thickness is 1/32 of the outer diameter at most, and the length per metre does not exceed 3 kg.
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申请公布号 |
DE19541414(C1) |
申请公布日期 |
1996.09.19 |
申请号 |
DE19951041414 |
申请日期 |
1995.11.07 |
申请人 |
REHAU AG + CO, 95111 REHAU, DE |
发明人 |
HEINRICH, GERHARD, 95111 REHAU, DE;TAUPITZ, ANDREAS, 95111 REHAU, DE |
分类号 |
F16L9/12;F16L55/033;(IPC1-7):F16L9/12;F16L9/133 |
主分类号 |
F16L9/12 |
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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