Fluid handling – Hydrant type – With casing
Patent
1999-06-16
2000-07-18
Walton, George L.
Fluid handling
Hydrant type
With casing
70175, 70176, 70189, 70276, 811251, 811761, 137382, 220284, 220725, 220726, 220727, 251 65, 251291, F16K 3506, F16K 3516, E03B 906
Patent
active
060892536
ABSTRACT:
A fire hydrant security system for mounting on a standpipe of a fire hydrant wherein the hydrant has a mounting surface with holes therethrough and a bonnet mounted on the mounting surface, the bonnet surrounding a valve operating spindle assembly. The system includes a security gap which is surrounded by a protective collar spaced from the security cap to define an annular gap. An operating tool having a socket which fits into the gap and surrounds the security cap is used to couple the security cap to the valve operating spindle to open the fire hydrant. The protective collar is preferably made of forged ductile iron and is bolted to the fire hydrant by being bolted to a mounting surface on the standpipe or by being secured by bolts to the bonnet. The security cap is thus protected from blows by sledge hammers wielded by vandals and water thieves.
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Istre Roy
Stehling Henry J.
Hydra-Shield Manufacturing Inc.
Walton George L.
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