Fluid handling – With casing – support – protector or static constructional... – Guards and shields
Patent
1999-03-31
1999-11-23
Fox, John
Fluid handling
With casing, support, protector or static constructional...
Guards and shields
137368, 1373825, F16K 3104
Patent
active
059882093
ABSTRACT:
A security device for a utility shutoff valve and a tool for inserting and removing the security device. The security device and tool are utilized for water and gas shutoff valves located underground that are accessed through a vertical access pipe. The invention is a cylindrical plug which is placed inside the access pipe, resting on top of the valve. The plug includes a grip resistant dummy valve handle which, when turned, causes the plug to rotate without having any effect on the valve. The plug is also very difficult to remove without the insertion/removal tool, comprising an inverted cup with a long handle, wherein the inside of the cup is lined with horizontal steel bristles. When the cup is placed over the top of the plug, the bristles enter corresponding holes in the dummy valve handle, allowing the plug to be lifted.
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Fox John
Litman Richard C.
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