发明名称 |
Security lock assembly for shut-off valve |
摘要 |
A security lock assembly for a shut-off valve consisting of a valve body and an exterior engageable portion secured to a gate stem so as to rotate the stem. The body has a flange with a hole therein. The security lock assembly comprises a lock disk having a central opening for receiving the engageable portion. Abutment edges are formed integrally with the disk for engagement with the engageable portion so as to rotate therewith. Indentations are formed in a bottom surface of the lock disk at a predetermined position. A pin-lock assembly is retained in the hole of the flange of the valve body. The pin-lock assembly has a pin portion upwardly biased against the lock disk. The pin portion is aligned with the indentation so as to engage therein when the valve stem is rotated to a predetermined closed position, whereby the valve is locked in the predetermined closed position by the pin portion.
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申请公布号 |
US6604391(B2) |
申请公布日期 |
2003.08.12 |
申请号 |
US20020084104 |
申请日期 |
2002.02.27 |
申请人 |
CENTRE DES TECHNOLOGIES ON GAZ NATUREL |
发明人 |
VELLETTE MICHEL;LE PAGE FREDERICK;LECONTE DIDIER;LAPOINTE CARL;ST-PIERRE MARC;AKEL SAMIR |
分类号 |
F16K35/10;(IPC1-7):F16K35/00 |
主分类号 |
F16K35/10 |
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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