Fluid handling – Hydrant type – With casing
Patent
1985-05-22
1986-01-28
Walton, George L.
Fluid handling
Hydrant type
With casing
1373825, 137800, 220 85P, 220284, 251291, F16K 3506, E03B 906
Patent
active
045664811
ABSTRACT:
A tamperproof fire hydrant which can only be operated with the use of a special operating tool thus preventing the opening of the hydrant by unauthorized persons for unauthorized use. Additionally the tubular hold-down nut for the operating nut is so designed to prevent unauthorized disassembly of the hydrant by unauthorized personnel. To prevent unauthorized use or unauthorized disassembly the polygonal shaped operating nut is concealed by a dome shaped cap covering both the hold-down nut and the operating nut, the cap being freely rotatable with respect thereto. The dome shaped cap permits only limited access to the operating nut. Additionally the hold-down nut for the operating nut is also protected in this manner and is provided with a specifically shaped outer surface which requires a special tool usable only when the dome shaped cap for the operating nut is removed.
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Humes Dennis W.
Leopold, Jr. Wilbur R.
Mueller Co.
Walton George L.
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