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US 4,544,281 AGranted
Mixers
AssigneeRobert Morton DG Limited
InventorNoel R. Wilkinson
Life of this patent
Estimating the term…
Abstract
A fluid mixer in which a pair of interconnected blades (6,6') are mounted either side of a rotatable shaft (8), the blades are each formed from a flat plate bent to form two or more planar portions (40, 42, 44) and mounted to the shaft so that the leading edge (52, 54, 56) of each portion is at a lesser radial distance than the trailing edge (54, 56, 58) of each portion. In this way each blade portion is angled inwardly accurately and the whole blade is easy to form.
Claims12
A fluid mixer for a vessel, said mixer comprising
- at least two interconnected blades rotatable within said vessel, each blade being mounted opposite the other relative to a rotation axis for said blades, each blade being formed from at least two connected substantially planar portions, the leading edge of the leading planar portion being radially spaced from said rotation axis, the leading planar portion being angled inwardly in the direction of rotation at an angle of about 30.degree. relative to a tangent drawn on a phantom circle of rotation that includes the leading edge of that leading planar portion, and the leading edge of each planar portion being positioned at a lesser radial distance relative to said rotation axis than the trailing edge of each said portion is positioned relative to said rotation axis.
A fluid mixer for a vessel, said mixer comprising
- at least two interconnected blades rotatable within said vessel, each blade being mounted opposite the other relative to a rotation axis for said blades, each blade being formed from three connected substantially planar portions, the leading edge of the leading planar portion for each blade being radially spaced from said rotation axis, the leading edge of each planar portion for each blade being positioned at a lesser radial distance from said rotation axis than the trailing edge of each planar portion is positioned from said rotation axis, the leading portion of each blade not being angled relative to vertical, the intermediate portion of each blade being angled about 10.degree. inwardly relative to vertical, and the trailing portion of each blade being angled about 15.degree. inwardly relative to vertical.
Dependencies are inferred from the claim text.