Hydraulic and earth engineering – Fluid control – treatment – or containment – Flow control
Patent
1994-12-02
1996-09-24
Tsay, Frank
Hydraulic and earth engineering
Fluid control, treatment, or containment
Flow control
2102421, E02B 808
Patent
active
055584624
ABSTRACT:
A fish screen device is adapted to be lowered to the bottom of a body of water such as a lake, river or the like and to be raised therefrom. The device includes, a housing unit including an upper flat wedge wire fish screen through which water passes and a discharge outlet for water passing through the fish screen for connection to external discharge piping. A controllable buoyancy arrangement, including a storage tank disposed within the housing unit and a compressor and control valves on shore, enables the housing unit including the fish screen to be lowered to the bottom of the body of water and to be raised therefrom. A pneumatic cleaning unit, also supplied from the compressor on shore, provides cleaning of the screen.
REFERENCES:
patent: 1451394 (1923-04-01), Hurst
patent: 1825169 (1931-09-01), Wyckoff
patent: 4260286 (1981-04-01), Buchanan
patent: 4337008 (1982-06-01), Kulyabko et al.
patent: 4526494 (1985-07-01), Eicher
patent: 4929122 (1990-05-01), Yoas
patent: 5161913 (1992-11-01), Boylan
patent: 5263833 (1993-11-01), Robinson et al.
patent: 5385428 (1995-01-01), Taft, III et al.
1) "Figure 1: Plan and Section Views of typical Eicher Screen Structure." 2) "Figure 2: Profile of Modular Inclined Screen as Conceptually Designed. "
4) "Figure 4: Typical Rotary Drum Screen Installation." 5) "Figure 5: Johnson Intake Screen System" 6) "Figure 6: Hendrick Intake Screen System. "
7) "Figure 7: Typical Stationary Perforated Plate Screen Installation."5
Koltos; E. Philip
Koltos E. Philip
The United States of America as represented by the Secretary of
Tsay Frank
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