Hydraulic and earth engineering – Fluid control – treatment – or containment – Flow control
Patent
1996-02-07
1997-10-21
Graysay, Tamara L.
Hydraulic and earth engineering
Fluid control, treatment, or containment
Flow control
405 84, 405 87, 405 95, 251 12, E02B 740, E02B 504
Patent
active
056789564
ABSTRACT:
A pump device includes a motor, a pump body having a first body portion and a second body portion, a shaft connected to the motor and extending into the pump body and an impeller mounted on the shaft between the first and second body portions. A four valve assembly is provided in the pump body. The first and second valves are provided in the first body portion, and the third and fourth valves are provided in the second body portion. This pump device may be used to move an attached gate through fluid. When the gate door is to be moved through the fluid in a first direction, the first valve and the fourth valve are opened (and the second and third valves are closed) so that the fluid moves through the pump body from the fourth valve to the first valve. When the gate door is to be moved in a second direction, the second valve and the third valve are opened (and the first and fourth valves are closed) so that the fluid moves through the pump body from the third valve to the second valve. This gate and pump arrangement may provide a navigational bypass in a body of water. Thus, electricity generating equipment can be included in and around the water body without closing the water to boats, ships and other water traffic.
REFERENCES:
patent: 523606 (1894-07-01), Milligan et al.
patent: 725927 (1903-04-01), Bradley
patent: 3345823 (1967-10-01), Rakcevic
Graysay Tamara L.
Lagman Frederick L.
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