Patent ID: 8851104

Claim:
An elevating fire hydrant assembly comprising: a water pipe which supplies firefighting water in accordance with opening and closing of a water control valve buried underground; an elbow pipe connected to the water pipe; a fixed pipe connected to the elbow pipe; an elevating pipe which is coupled to the fixed pipe to retract into or extend from the ground and a lower end part of which is coupled to a guide block that slides along an inner surface of the fixed pipe; a sealing plate coupled to the top of the fixed pipe to prevent the elevating pipe from escaping; an air valve disposed above the fixed pipe and including a venting passage through the sealing plate; a head block which is coupled to the top of the elevating pipe and has a hose connector for connecting a firefighting hose; and a valve means for opening and closing the lower end part of the elevating pipe, wherein, in the state of the lower end part of the elevating pipe being closed by the valve means, the elevating pipe is risen by pressure of the firefighting water supplied through the water pipe.