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US 4,930,986 AGranted
Apparatus for immersing solids into fluids and moving fluids in a linear direction
AssigneeThe Carborundum Company
InventorPaul V. Cooper
Life of this patent
Estimating the term…
Abstract
An impeller assembly is disclosed which is arranged to produce linear flow of fluid which prohibits radial flow of that fluid. An impeller is surrounded by a hollow cylindrical section mounted and fixed to the periphery of the impeller blades. The cylindrical section may extend either beyond the leading edges of the impeller blades or beyond the trailing edges of the impeller blades, or both, along the axis of rotation of the impeller assembly.
Claims9
An axial flow impeller assembly comprising:
- (a) impeller means comprising;
- (i) hub means adapted to be rotatably connected to drive means;
- and
- (ii) at least one impeller blade, mounted concentrically to said hub such that rotation of said hub means will cause concurrent and concentric rotation of said at least one impeller blade;
- and
- (b) drum means, comprising a concentrically hollow bored cylindrical section, concentrically mounted and fixed to the circumferential periphery of said at least one impeller blade such that rotation of said hub means and said at least one impeller blade will cause concurrent and concentric rotation of said drum means;
- (c) said impeller assembly being adapted to linearly move fluid therethrough while substantially preventing radial flow of said fluid from the circumferential periphery of said at least one impeller blade;
- and
- (d) said at least one impeller blade having a drop angle which is sufficiently shallow to substantially prevent fluid turbulence and radial flow of fluids within said impeller assembly.
6 more elements
An axial flow impeller assembly as in said at least one impeller blade is a square pitch variable blade angle propeller.
Dependencies are inferred from the claim text.