US 4,792,395 AGranted

High speed countercurrent centrifuge for removal attachment of chromatographic columns thereto, and chromatographic column for the same

OwnerDavid Y. W. Leeinventor

Life of this patent

Estimating the term…

Loading patent…

Abstract

A high speed countercurrent centrifuge is designed so that the chromatographic column used therewith may be readily replaced. A shaft for rotating a chromatographic column includes a column holder plate fixed therearound. The column holder plate has upwardly extending pins which engage the corresponding holes on the bottom flange of a spool about which a chromatographic column is wrapped, fixing the orientation of the spool relative to the column holder plate. Also a multi-layer chromatographic column is constructed to be used in the centrifuge. Multiple layers of tubing are wrapped around the above-described spool. The inlet and outlet ends of this tubing terminate in tubing adaptors mounted on an outer surface of a flange to permit quick connection of the column to the flow tubes of the centrifuge apparatus.

Claims7

Dependent claims

An apparatus for high speed countercurrent chromatographgy comprising:

a frame including a first bottom plate mounted for rotation about a pipe extending between said first bottom plate and a top supporting plate of said frame, a fixed portion of said top supporting plate surrounding said pipe and extending outward therefrom to at least one side being fixed by a connecting member to said first bottom plate, a detachable portion of said top supporting plate being releasably attached to said fixed portion;
releasing means for releasably mounting said detachable portion to said fixed portion;
a shaft, parallel to and spaced apart from said pipe, extending rotatably between said first bottom plate and said detachable portion, said shaft extending through a bore of a bearing section in said detachable portion;
a plate-shaped column holder rigidly fixed to and extending radially away from said shaft, said column holder having means for receiving a spool on a radially extending surface thereof in a manner which prevents rotation of the spool with respect to said shaft and said column holder;
means for rotating said frame about said pipe;
means for transmitting the rotation of said frame to said shaft;
a second bottom plate fixed to said frame below said first bottom plate, said pipe including a first section extending through said first and second bottom plates, said first section of said pipe being rotatable with respect to said first bottom plate but not with respect to said second bottom plate, and a second section between said top supporting plate and above said first bottom plate, said top supporting plate and said first section of said pipe being rotatable with respect to said second section of said pipe, said second section extending through and being rotatable with respect to said second bottom plate and said shaft extending through said second bottom plate;
and wherein said rotating and transmitting means collectively comprise:
a sun gear fixed to and extending radially away from said pipe, positioned between said first and second bottom plates;
and
a planetary gear fixed to and extending radially away from said shaft, positioned between said first and second bottom plates, and said planetary gear meshing with said sun gear.

8 more elements

An apparatus for high speed countercurrent chromatography comprising:

a frame including a first bottom plate mounted for rotation about a pipe extending between said first bottom plate and a top supporting plate of said frame, a fixed portion of said top supporting plate surrounding said pipe and extending outward therefrom to at least one side being fixed by a connecting member to said first bottom plate, a detachable portion of said top supporting plate being releasably attached to said fixed portion;
releasing means for releasably mounting said detachable portion to said fixed portion;
a shaft, parallel to and spaced apart from said pipe, extending rotatably between said first bottom plate and said detachable portion, said shaft extending through a bore of a bearing section in said detachable portion;
a plate-shaped column holder rigidly fixed to and extending radially away from said shaft, said column holder having means for receiving a spool on a radially extending surface thereof in a manner which prevents rotation of the spool with respect to said shaft and said column holder;
means for rotating said frame about said pipe;
means for transmitting the rotation of said frame to said shaft;
and a spool having a central bore for being slidably received on said shaft, said spool also having a top and bottom flange, said spool being secured to said column holder by at least one quick-release means adjacent to said surface screw-threaded around said shaft above one of said flanges, an outer surface of the other of said flanges being supported upon said column holder.

4 more elements

Dependencies are inferred from the claim text.