Tamper prevention device for fire hydrants

Details Tamper prevention device for fire hydrants Tamper prevention device for fire hydrants

1988-08-15

1989-05-02

Walton, George L.

Fluid handling

Hydrant type

With casing

137382, 137800, 220 85P, 220284, 251291, F16K 3506, E03B 906

Patent

active

048258989

ABSTRACT:
A protective device for fire hydrants comprises a generally domed shaped member having a shape conforming to the bonnet of a fire hydrant and including a socket configured to receive an operating nut thereof. The protective device has a diameter too great to be engaged by readily available pliers, wrenches and the like but may be actuated by use of a chain wrench or a friction wrench. The device includes no separate moving parts which may freeze or jam and may be retrofitted to existing fire hydrants by welding or brazing.

REFERENCES:
patent: 2576631 (1951-11-01), Mueller
patent: 2762386 (1956-09-01), Fogle
patent: 3623498 (1971-11-01), Manahan et al.
patent: 4033372 (1977-07-01), Bowman
patent: 4379469 (1983-04-01), Britz
patent: 4484595 (1984-11-01), Vanek et al.
patent: 4526193 (1985-07-01), Drach

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