发明名称 |
Extension for a canal bed liner |
摘要 |
An extension collar suitable for engagement with an upper ledge of an invert liner positioned within the canal bed of the base of a manhole or catch basin structure. The extension collar is replaceable and is suitable for use in either new construction or rehabilitation of the manhole structure. A plurality of extension collars may be sealably stacked one on top of the other to create a corrosion resistant barrier at a desired height from the bottom of the base of the manhole or catch basin.
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申请公布号 |
US6206609(B1) |
申请公布日期 |
2001.03.27 |
申请号 |
US19990374405 |
申请日期 |
1999.08.13 |
申请人 |
ROYAL ENVIRONMENTAL SYSTEMS, INC. |
发明人 |
TRANGSRUD JULIAN P. |
分类号 |
E02D29/14;(IPC1-7):E02D29/14;F16L5/00 |
主分类号 |
E02D29/14 |
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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