Toroidal coil planet centrifuge
AssigneeThe United States of America as represented by the Department of Health, Education and Welfare
InventorYoichiro Ito
Life of this patent
Estimating the term…
Abstract
An apparatus for countercurrent chromatography consisting of a coiled separation column which is rotated about the axis about which is it wound and the axis is also rotated about a main axis. The embodiments of the invention are based on the fact that the pattern of the centrifugal force field greatly changes with the ratio of the two radii of rotation and depending on the particular effect desired, the apparatus is configured to achieve the most effective force field to gain the effect. The separation column is a tube helix wound around a flexible core member which can be wound onto the coil holder in various orientations to further effect the desired results.
Claims12
A toroidal coil planet centrifuge, comprising:
- a support means provided with upper and lower stationary members;
- rotary frame means provided with upper and lower plate portions and mounted between said stationary members for rotation about a first vertical axis;
- at least one coil means mounted between said upper and lower plate members around a second vertical axis, said second vertical axis being spaced from said first vertical axis by distance R, and said coil holder means having a substantially cylindrical separation column supporting surface spaced from said second axis by distance r, the ratio of r to R being greater than 0.25;
- separation column means mounted on said coil holder supporting surface, said separation column means including a flexible core member and at least one tube having ends at least one tube wound in a helix about said flexible core member;
- inlet and outlet tubes connected to respective said ends of said at least one tube;
- tube holding means located within said rotary frame means for holding said inlet and outlet tubes so that the orientation thereof remains constant;
- drive means for rotating said frame means and said coil holder means;
- and
- counterbalancing means mounted on said frame means opposite said coil holder means.
A toroidal coil planet centrifuge, comprising:
- a support means provided with upper and lower stationary members;
- rotary frame means provided with upper and lower plate portions and mounted between said stationary members for rotation about a first vertical axis;
- at least one coil holder means mounted between said upper and lower plate members around a second vertical axis, said second vertical axis being spaced from said first vertical axis by distance R, and said coil holder means having a substantially cylinderical separation means supporting surface spaced from said second axis by distance r, the ratio of r to R being greater than 0.25;
- separation means mounted on said coil holder supporting surface, said separation means including at least one tube wrapped directly onto said cylinderical supporting surface and having two ends;
- inlet and outlet tubes connected to respective said ends of said at least one tube;
- a tube holding means located within said rotary frame means for holding said inlet and outlet tubes so that the orientation thereof will remain constant;
- drive means for rotating said frame means and coil holder means;
- and
- counterbalancing means mounted on said frame means opposite said coil holder means.
Dependencies are inferred from the claim text.