Liquid purification or separation – Gravitational separator – Portable invertible – e.g. – milk and cream separator
Patent
1993-10-13
1995-05-30
Dawson, Robert A.
Liquid purification or separation
Gravitational separator
Portable invertible, e.g., milk and cream separator
210515, 210518, 210789, 210 94, 436177, B01D 2126
Patent
active
054198356
ABSTRACT:
A method of partitioning a pre-selected phase of a sample of liquid having a plurality of phases of differing densities, a separation device and a tube containing the separation device. The sample of liquid is placed in a first chamber of a linear tube that is separated from a second chamber by a separation device. The separation device slidably engages the interior surface of the tube in an essentially fluid-tight manner and has an axial orifice on the longitudinal axis of the tube that is in fluid flow communication with a flow-restriction channel. The phases are ordered concentrically by rotating the tube around its longitudinal axis e.g. in an axial centrifuge. The volume of the first chamber is reduced by movement of the separation device within the tube, that phase of the liquid located axially within the first chamber flowing into the axial orifice and passing through the flow-restriction channel into the second chamber. The reduction of the volume of the first chamber is controlled using phase-separation information. The method is useful in separation of blood components.
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Adams George A.
Luoma, II Robert P.
Dawson Robert A.
Du Pont Canada Inc.
E. I. Du Pont de Nemours and Company
Reifsnyder David
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