Fluid handling – Processes
Patent
1991-02-11
1993-01-19
Michalsky, Gerald A.
Fluid handling
Processes
137124, 137142, 137559, F04F 1000
Patent
active
051799693
ABSTRACT:
A roof draining system including a series of portable siphon heads which can be placed anywhere on a flat roof where there is a ponding area that no longer can be drained by any pre-existing water drainage system, a series of upstanding pipes, and a second series of roof top pipes each connected at one end to one of the siphon heads and each connected at an opposite end to one of the upstanding pipes. A control valve structure is connected to the upstanding pipes. The control valve structure has a series of solenoid operated valves each connected to one of the upstanding pipes at one end. Manual discharge valves are each connected at an opposite end of one of the pipe tees. An electrical timer is operatively connected to each of the solenoid operated valves. Siphon pumps are each positioned in line with and operatively connected between one of the solenoid operated valves. The timer is cooperable with solenoid operated valves at timed intervals to cause the solenoid operated valves to open thus permitting city water to pass through the solenoid operated valves and the associated siphon pump, the siphon pumps each having a Venturi jet passageway therein which functions to generate a pressure differential causing roof water to be siphoned from the ponding areas on the roof into the associated upstanding pipe.
REFERENCES:
patent: Re28491 (1975-07-01), Kundert
patent: 4248258 (1981-02-01), Devitt et al.
patent: 4406300 (1983-09-01), Wilson
Meroni, Jr. Charles F.
Michalsky Gerald A.
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