Magnetic filter with ordered wire array
First Claim
1. A device for separating magnetic materials from non-magnetic materials in fluid using an applied magnetic field, the device having a longitudinal axis along which fluid flows and comprising:
- a) upstream fluid flow expansion and distribution means for expanding and uniformly distributing the fluid flow from a smaller transverse cross-section to a larger transverse cross-section, comprising an inverted upstream funnel with a smaller input end and larger output end, and a plurality of non-magnetisable flow-smoothing surface means extending transversely of the longitudinal axis across the funnel and spaced apart from one another along the longitudinal axis;
b) filter means for magnetically filtering the magnetic materials from the fluid while allowing non-magnetic materials to pass through when a magnetic filed is applied thereto, comprising a filter input and a filter output and a coaxial filter chamber located on the longitudinal axis with the filter input coupled to the output end of the upstream funnel and the filter chamber having mounted therein an ordered array of magnetisable wires; and
c) downstream flow contraction and distribution means for contracting and uniformly distributing the fluid flow from a larger transverse cross-section to a smaller transverse cross-section, comprising a downstream funnel having a larger input end coupled to the filter output and a smaller output end, and a plurality of non-magnetisable flow-smoothing surface means extending transversely of the longitudinal axis across the funnel and spaced apart from one another along the longitudinal axis.
3 Assignments
0 Petitions
Accused Products
Abstract
A device for separating magnetic materials from non-magnetic materials in a sample using an applied magnetic field includes an inverted upstream funnel containing a plurality of longitudinally spaced, non-magnetisable flow-smoothing surfaces extending transversely across the width of the funnel, a coaxial filter chamber coupled to the output end of the upstream funnel having mounted therein an ordered wire array of magnetisable wires and a coaxial downstream funnel containing a plurality of longitudinally spaced, non-magnetisable flow-smoothing surfaces extending transversely across the width of the downstream funnel. The device may be used to separate magnetically labelled materials from samples such as biological samples.
38 Citations
16 Claims
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1. A device for separating magnetic materials from non-magnetic materials in fluid using an applied magnetic field, the device having a longitudinal axis along which fluid flows and comprising:
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a) upstream fluid flow expansion and distribution means for expanding and uniformly distributing the fluid flow from a smaller transverse cross-section to a larger transverse cross-section, comprising an inverted upstream funnel with a smaller input end and larger output end, and a plurality of non-magnetisable flow-smoothing surface means extending transversely of the longitudinal axis across the funnel and spaced apart from one another along the longitudinal axis; b) filter means for magnetically filtering the magnetic materials from the fluid while allowing non-magnetic materials to pass through when a magnetic filed is applied thereto, comprising a filter input and a filter output and a coaxial filter chamber located on the longitudinal axis with the filter input coupled to the output end of the upstream funnel and the filter chamber having mounted therein an ordered array of magnetisable wires; and c) downstream flow contraction and distribution means for contracting and uniformly distributing the fluid flow from a larger transverse cross-section to a smaller transverse cross-section, comprising a downstream funnel having a larger input end coupled to the filter output and a smaller output end, and a plurality of non-magnetisable flow-smoothing surface means extending transversely of the longitudinal axis across the funnel and spaced apart from one another along the longitudinal axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification