Fluid handling – Processes
Patent
1986-07-07
1987-03-31
Walton, George L.
Fluid handling
Processes
137281, 137301, 137302, 251 73, 251 89, 251 94, 251111, 251279, E03B 904, E03B 914
Patent
active
046535225
ABSTRACT:
The ground hydrant of the present invention includes an outlet nozzle above ground and a drain water collection cylinder located below the frost line of the ground. When the hydrant is shut off, the residual water in the nozzle drains into the ground water cylinder and is stored there below the frost line. The next time that the hydrant is turned on, the piston within the cylinder forces the stored water in the cylinder outwardly through a drain line where it is expelled above the ground. The force for moving the piston within the cylinder is provided by water pressure which is diverted from the water source to move the piston and force the stored drain water out of the cylinder and onto the ground. When the hydrant is turned off a second time, the residual water within the hydrant drains again into the cylinder where it is stored until the next time the hydrant is turned on.
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patent: 4520836 (1985-06-01), Hutter, III
Fillman Russell L.
Srajer Reinhard
Walton George L.
Woodford Manufacturing Company
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