Rotating coil centrifuge
AssigneeNational Research Development Corporation
InventorIan A. Sutherland
Life of this patent
Estimating the term…
Abstract
In a centrifuge attachment for use in counter current chromatography, a centrifuge plate rotatable about a central axis carries either two or more convoluted (e.g. straight helical) coils or a single convoluted coil arranged as a toroid, the tube or tubes being convoluted about an axis of convolution which is generally perpendicular to the local direction of the centrifugal force generated by rotation of the plate. Inlet and outlet tubes are provided in a known manner such that they do not twist and the convulated coil is rotated about its axis of convolution at a speed which is independent of the speed of rotation of the centrifuge plate.
Claims11
A centrifuge attachment comprising a centrifuge plate fixed to a hollow central shaft;
- first rotation means to rotate the hollow central shaft whereby the centrifuge plate rotates about a central axis;
- a support tube which passes through the hollow central shaft;
- second rotation means to rotate the support tube at a speed which differs slightly from the speed of rotation of the hollow central shaft;
- support means for supporting on the centrifuge plate at least one convoluted tube near the periphery of the plate, the tube being convoluted about an axis of convolution which is generally perpendicular to the local direction of the centrifugal force generated by rotation of the centrifuge plate;
- connection means between the support tube and the at least one convoluted tube whereby the at least one convoluted tube is rotated about an axis parallel to the axis of convolution during rotation of the centrifuge plate and at a predetermined speed which is independent of said rotation;
- and means for supplying inlet and outlet tubes to the at least one convoluted tube in a twist free manner, the inlet and outlet tubes passing through the support tube.
A centrifuge attachment comprising a centrifuge plate fixed to a hollow central shaft;
- support means for supporting on the centrifuge plate at least one convoluted tube near the periphery of the plate, the tube being convoluted about an axis of convolution which is generally perpendicular to the local direction of the centrifugal force generated by rotation of the plate;
- first rotation means to rotate the hollow central shaft whereby the centrifuge plate is rotated about the central axis;
- second rotation means to rotate the at least one tube about an axis parallel to the axis of convolution during rotation of the centrifuge plate and at a predetermined speed which is independent of the speed of rotation of the centrifuge plate;
- a tube holder which is parallel to the hollow central shaft and which is rotatable around the outside of the centrifuge plate in the same direction as and at half the speed of the rotation of the hollow central shaft;
- and a fixed tube support in axial alignment with the central shaft.
A centrifuge comprising a centrifuge plate fixed to a hollow central shaft;
- first rotation means to rotate the hollow central shaft whereby the centrifuge plate rotates about a central axis;
- a support tube which passes through the hollow central shaft;
- second rotation means to rotate the support tube at a speed which differs slightly from the speed of rotation of the hollow central shaft;
- support means for supporting on the centrifuge plate at least one convoluted tube near the periphery of the plate, the tube being convoluted about an axis of convolution which is generally perpendicular to the local direction of the centrifugal force generated by rotation of the centrifuge plate;
- connection means between the support tube and the at least one convoluted tube whereby the at least one convoluted tube is rotated about an axis parallel to the axis of convolution during rotation of the centrifuge plate and at a predetermined speed which is independent of said rotation;
- and means for supplying inlet and outlet tubes to the at least one convoluted tube in a twist free manner, the inlet and outlet tubes passing through the support tube;
- and drive means connected to the first and second rotation means.
Dependencies are inferred from the claim text.