发明名称 |
Pipe seal assembly for poured concrete on-site waste disposal system components |
摘要 |
A pipe seal assembly for a poured concrete tank or box in an on-site waste disposal system including a seal member having an inclined inner wiper flange which releasably retains a mandrel, and plug means also releasably mounted within the seal member to prevent ingress of liquid concrete during box formation. A spacer member is provided for those instances where the seal member is to be installed in the wall of a relatively thick-walled concrete box. Alternate means for releasably retaining the seal member to the mandrel are disclosed. Additionally, a series of such seal assemblies is disclosed for use in sealably attaching a pipe through a thick poured concrete wall, such as a basement wall.
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申请公布号 |
US4951914(A) |
申请公布日期 |
1990.08.28 |
申请号 |
US19880276220 |
申请日期 |
1988.11.23 |
申请人 |
TUF-TITE, INC. |
发明人 |
MEYERS, THEODORE W.;SHELTON, STEVEN R. |
分类号 |
E03F3/04;E03F11/00;F16L5/10;(IPC1-7):E02D29/16 |
主分类号 |
E03F3/04 |
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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