发明名称 |
Foldable tube with a tubluar having at least three elongate flexible areas that are more felxible than other areas of the tubular wall and that act as hinges |
摘要 |
A foldable tube comprises a wall in which at least three elongate relatively flexible areas are present, which areas form plastic hinges which define a wall segment that can be folded inwardly to bring the tube into a contracted shape
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申请公布号 |
NZ507197(A) |
申请公布日期 |
2003.03.28 |
申请号 |
NZ19990507197 |
申请日期 |
1999.04.22 |
申请人 |
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B |
发明人 |
LOHBECK, WILHELMUS CHRISTIANUS MARIA |
分类号 |
E21B29/10;E21B43/10;F16L9/12;F16L11/12;F16L55/16;F16L55/165;(IPC1-7):E21B4A;F16L5 |
主分类号 |
E21B29/10 |
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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