Hydraulic and earth engineering – Fluid control – treatment – or containment
Patent
1997-01-08
1998-03-31
Taylor, Dennis L.
Hydraulic and earth engineering
Fluid control, treatment, or containment
405 36, 405 37, E02F 100, E02B 1100
Patent
active
057330654
ABSTRACT:
A vertical-shaft multi-stage pump has adjustable vanes on its lower stage. A vane angle operating mechanism has an operating shaft extending through a hollow portion of the drive shaft of the upper stage and a link mechanism connected to the operating shaft and the adjustable vane impeller for converting axial motion of the operating shaft into vane angle rotational motion. The pump is particularly suited for use in an underground drainage system.
REFERENCES:
patent: 1972780 (1934-09-01), Laskowitz
patent: 2324650 (1943-07-01), Stepanoff
patent: 3626823 (1971-12-01), Toth
patent: 3919848 (1975-11-01), Sullivan
patent: 4457646 (1984-07-01), Laesch
patent: 4890955 (1990-01-01), Mercier
patent: 4997312 (1991-03-01), Regan
patent: 5487621 (1996-01-01), Takada et al.
patent: 5624226 (1997-04-01), Yamada et al.
Article entitled "Deep Underground Water Drainage Channel Water Drainage Pump System", Turbo Machines, vol. 21, No. 10, pp. 23-29, Oct. 1993.
Article entitled "Extreme Depth Underground Flood Way Drainage Pump System" (Oshiudo Chika Hosuiro Haisui Pompu Shisutemu) A. Morita et al Source Tabo Kikai vol. 21 #10, no date.
Maru Saburo
Sudo Sumio
Yamada Masayuki
Hitachi , Ltd.
Taylor Dennis L.
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