Patent ID: 8365759

Claim:
A locking fire hydrant, comprising: a fire hydrant body having a head that defines a hollow interior, the head having a main outlet port, an auxiliary outlet port, and a valve access hole, the head further having an outer surface configured to define a main cap recess that surrounds the main outlet port, an auxiliary cap recess that surrounds the auxiliary outlet port, and a valve access channel that extends between the main cap recess and the valve access hole, and the head further having an internal channel defined therein, the internal channel extending between the main cap recess and the auxiliary cap recess; a locking cap mounted on the fire hydrant body, the locking cap being configured to close off the main outlet port and the valve access hole; a plunger assembly disposed within the internal channel defined in the head of the fire hydrant body, the plunger assembly including first and second plungers moveably disposed within a sleeve, the first plunger being disposed such that an end thereof is capable of extending into the main cap recess and wherein the locking cap compresses the end of the first plunger into the internal channel, the first plunger being coupled to and displacing the second plunger in the internal channel such that an end of the second plunger is extended into the auxiliary cap recess; and an auxiliary cap mounted on the fire hydrant body, the auxiliary cap being configured to close off the auxiliary outlet port, and the auxiliary cap having a plurality of ratchet teeth on a back side thereof, wherein one of the ratchet teeth engages the end of the second plunger to prevent the auxiliary cap from being removed from the fire hydrant body.