发明名称 |
Underground tank fill pipe combination |
摘要 |
A combination of elements for use with an underground tank that has a fill tube which is below ground level and subject to rainwater immersion. It has special application to a fill tube closure that has a small diameter passageway to maintain atmospheric pressure in the fill tube. It includes a float valve to close the passageway if the rainwater rises above a given level adjacent to the top of the fill tube.
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申请公布号 |
US4327769(A) |
申请公布日期 |
1982.05.04 |
申请号 |
US19800118932 |
申请日期 |
1980.02.06 |
申请人 |
TEXACO INC. |
发明人 |
MULLER, RALPH C.;DECKER, THOMAS R. |
分类号 |
F16K24/04;(IPC1-7):F16K45/00 |
主分类号 |
F16K24/04 |
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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