Patent ID: 6047723
Filing Date: 2000-04-11
Classification: E03B,Y10T

Abstract:
In a yard hydrant, the combination comprising:a) a cylinder, and a piston movable up and down in the cylinder in association with water flow into and out of a reservoir in the cylinder,b) a tubular means associated with the piston and extending upwardly from the piston and downwardly from the piston, and movable therewith,c) a supply means to deliver water from a source into the tubular means for flow upwardly therein and delivery above the piston and cylinder when the piston is in a first position relative to the cylinder, to discharge water from the hydrant,d) a porting means carried by said tubular means to drain water into the reservoir within the cylinder below the piston, when the piston is moved to a second position relative to the cylinder, to block water flow from the hydrant,e) and an actuator above the piston and cylinder to effect displacement of the piston and between said positions,f) said porting means being moved within said reservoir in said second position, and being moved outside the reservoir in said first position,g) the supply means having sideward communication via the porting means with the interior of the tubular means above the bottom of said tubular means when said porting means is outside the reservoir, and said sideward communication being blocked when the porting means is disposed within the reservoir, whereby water within the tubular means above the reservoir can drain back into the reservoir to prevent freezing.h) the bottom of the tubular means remaining closed in all positions of the tubular means.