发明名称 |
Method for making precast concrete meter pit |
摘要 |
A precast concrete meter pit consisting of a plurality of precast concrete hollow elongated cylindrical wall sections in end to end relation to one another is fabricated by utilizing a slip form packerhead apparatus in which the wall sections are formed with an annular slip ring when concrete is injected into the slip form apparatus. |
申请公布号 |
US8282869(B2) |
申请公布日期 |
2012.10.09 |
申请号 |
US20080288172 |
申请日期 |
2008.10.17 |
申请人 |
ANDERSON EDWARD J.;PARRINGTON GEOFFERY S.;PELCHAT, JR. EUGENE J.;PRECAST CONCEPTS, LLC |
发明人 |
ANDERSON EDWARD J.;PARRINGTON GEOFFERY S.;PELCHAT, JR. EUGENE J. |
分类号 |
B28B21/22;B28B21/24;B28B21/34;F16L9/08 |
主分类号 |
B28B21/22 |
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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