| 发明名称 |
VENTED PORT-CAP FOR FIRE HYDRANT |
| 摘要 |
<p>The vented port-cap includes a check-valve, which admits air into the barrel of the hydrant when the pressure inside is lower than the pressure outside. After an inspection of the hydrant, the hydrant can be left to drain by itself, even though the port-cap has been replaced and tightened.</p> |
| 申请公布号 |
CA2517744(C) |
申请公布日期 |
2013.05.28 |
| 申请号 |
CA20052517744 |
申请日期 |
2005.08.31 |
| 申请人 |
HOLLAND, DARRYLL ARTHUR DOUGLAS;MONTGOMERY, SEAN KELLIE |
发明人 |
HOLLAND, DARRYLL ARTHUR DOUGLAS;MONTGOMERY, SEAN KELLIE |
| 分类号 |
E03B9/06;A62C35/68;B65D51/16;E03B9/02;E03B9/14;F16K17/04;F16K24/04 |
主分类号 |
E03B9/06 |
| 代理机构 |
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代理人 |
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| 主权项 |
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