Pump for pumping high-viscosity liquids, slurries, and...

Details Pump for pumping high-viscosity liquids, slurries, and... Pump for pumping high-viscosity liquids, slurries, and...

2006-07-17

2009-06-30

Kershteyn, Igor (Department: 3745)

Rotary kinetic fluid motors or pumps

Axially opposed working fluid paths to or from runner

Pump impeller means

C415S090000, C415S101000, C415S102000, C415S131000, C415S143000

Reexamination Certificate

active

07553124

ABSTRACT:
The present invention is a centrifugal pump that pumps high-viscosity liquids, slurries, and solids-containing liquids. The pump has a housing, a chamber formed within the housing, a first discoidal member positioned in the chamber, a second discoidal member positioned in that chamber, connecting rods connecting a periphery of the first discoidal member to a periphery of the second discoidal member, and a drive for rotating the first discoidal member and the second discoidal member positioned in the chamber. The first discoidal member is either a recessed impeller or half-regular closed centrifugal impeller. The second discoidal member is a recessed impeller, a disc impeller, or a half-regular closed centrifugal impeller. The second discoidal member has a hole in the center.

REFERENCES:
patent: 1406297 (1922-02-01), Stewart
patent: 3901623 (1975-08-01), Grennan
patent: 4135852 (1979-01-01), Archibald
patent: 4439200 (1984-03-01), Meyer et al.
patent: 4662819 (1987-05-01), Lakowske et al.
patent: 5800058 (1998-09-01), Cook
patent: 6074167 (2000-06-01), Olifirov et al.
patent: 6315532 (2001-11-01), Appleby

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