Fluid handling – Hydrant type – Expansible chamber operated by valve actuator for draining...
Patent
1993-05-10
1993-11-16
Walton, George L.
Fluid handling
Hydrant type
Expansible chamber operated by valve actuator for draining...
137287, 137301, E03B 904, E03B 914
Patent
active
052614417
ABSTRACT:
A yard hydrant includes a discharge nozzle above ground level connected to other vertically reciprocal working parts in the ground below the frost line. A cylindrical water reservoir unit, disposed below the frost line around said working parts, includes a diaphragm assembly removably attached to such working parts for reciprocation therewith, and a deformable diaphragm on said assembly provides a water storage area. Residual water in the hydrant when it is turned off is collected in the storage area and returned to the hydrant for discharge through the nozzle when the hydrant is turned on. The working parts are removable from the diaphragm assembly for servicing and repairs.
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patent: 3770003 (1973-11-01), Uroshevich
patent: 3926206 (1975-12-01), Anderson
patent: 3926207 (1975-12-01), Anderson
patent: 4653522 (1987-03-01), Fillman et al.
Adler Morton S.
Merrill Manufacturing Company, Inc.
Walton George L.
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