US4487693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-layer coil countercurrent chromatograph with adjustable revolutional radius
Assignee: United States Department of Health and Human Services
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Filing: 1983-11-23
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Granted: 1984-12-11
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Expires: 2003-11-23
Abstract
Abstract A flow-through apparatus for two-phase countercurrent chromatography consisting of a multi-layer helically coiled column carried on a flanged reel mounted on a frame revolving on a first axis. The reel rotates on a second axis parallel to and spaced from the first axis, at the same angular velocity and in the same direction as the frame to prevent twisting of its inlet and outlet flow tubes, which extend through an axial passage in a shaft portion of the reel. The reel has opposite shaft portions which are journalled in detachable opposite bearing blocks carried by the frame. The bearing blocks have a plurality of sets of bearings spaced to define different spaced positions of the second axis relative to the first axis, enabling adjustment of the β value for the system as required. A counterweight is detachably mounted on the frame opposite the multi-layer coiled column by means of detachable supporting blocks, enabling the counterweight to be readily replaced as required by the β adjustment.
Inventors
- 👤 Yoichiro Ito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:59
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/26; G01N30/38; G01N30/42; B; B01; B01D; B01D11/00; B01D11/04; B01D15/00; B01D15/08; B01D15/10; B01D15/18; B01D15/1807
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
112 words
An apparatus for continuous countercurrent chromatography comprising a support, frame means rotatably mounted on said support for rotation on a first axis, multi-layer helically coiled separation column means having opposite axial end portions and being rotatably mounted on said frame means for rotation on a second axis parallel to and spaced from said first axis, inlet and outlet flow tubes connected to the terminal ends of said multi-layer helically coiled column means, means to simultaneously revolve said frame means around said first axis and rotate said column means around said second axis, and means carried by said frame means enabling changing the spacing distance between said second axis and said first axis.
Claim 2
Independent Claim
112 words
An apparatus for continuous countercurrent chromatography comprising a support, frame means rotatably mounted on said support for rotation on a first axis, multi-layer helically coiled separation column means having opposite axial end portions and being rotatably mounted on said frame means for rotation on a second axis parallel to and spaced from said first axis, inlet and outlet flow tubes connected to the terminal ends of said multi-layer helically coiled column means, means to simultaneously revolve said frame means around said first axis and rotate said column means around said second axis, and means carried by said frame means enabling changing the spacing distance between said second axis and said first axis.
Claim 3
Dependent Claim
32 words
The apparatus of claim 1, and wherein said spacing distance-changing means comprises journal means detachably secured on said frame means and constructed to rotatably support said column means on said second axis.
Claim 4
Dependent Claim
45 words
The apparatus of claim 2, and wherein said detachable journal means comprises a set of opposing bearing blocks detachably secured on said frame means and having bearing means to rotatably receive the opposite axial end portions of said column means and defining said second axis.
Claim 5
Dependent Claim
57 words
The apparatus of claim 2, and wherein said detachable journal means comprises a pair of opposing bearing blocks detachably secured on said frame means and having a plurality of radially spaced sets of bearing means located to rotatably support the axial end portions of said column means and defining correspondingly spaced selected locations of said second axis.
Claim 6
Dependent Claim
25 words
The apparatus of claim 1, and wherein said multi-layer helically coiled separation column means is mounted vertically and said first and second axes are vertical.
Claim 7
Dependent Claim
58 words
The apparatus of claim 1, and wherein said separation column means is provided with guide passage means located along said second axis and protectively receiving said flow tubes, and means to simultaneously rotate said column means around said second axis and revolve said frame means around said first axis at relative rates avoiding twisting of said flow tubes.
Claim 8
Dependent Claim
29 words
The apparatus of claim 1, and counterweight means detachably secured to said frame means opposite and in balancing relationship to said column means with respect to said first axis.
Claim 9
Dependent Claim
61 words
The apparatus of claim 1, and wherein said frame means includes a plurality of spaced parallel rigidly-connected plate members mounted for rotation around said first axis, and wherein said spacing distance-changing means comprising detachable journal means on an opposing pair of said plate members constructed to rotatably support said column means between said opposing pair for rotation on said second axis.
Claim 10
Dependent Claim
49 words
The apparatus of claim 8, and wherein said detachable journal means comprises respective bearing blocks detachably secured to the peripheral portions of said opposing pair of plate members and having bearing means to rotatably support the opposite axial end portions of said column means and defining said second axis.
Claim 11
Dependent Claim
41 words
The apparatus of claim 9, and wherein the bearing blocks are provided with radially spaced sets of bearing means located to rotatably support the axis end portions of said column means and defining correspondingly spaced selected positions of said second axis.
Claim 12
Dependent Claim
32 words
The apparatus of claim 8, and counterweight means detachably secured between said opposing pair of plate members and being in balancing relationship to said column means with respect to said first axis.
Claim 13
Independent Claim
87 words
An apparatus for continuous countercurrent chromatography comprising a support, frame means rotatably mounted on said support for rotation on a first axis, multi-layer helically coiled separation column means rotatably mounted on said frame means for rotation on a second axis parallel to and spaced from said first axis, inlet and outlet flow tubes connected to the terminal ends of said multi-layer helically coiled column means, and means to simultaneously revolve said frame means around said first axis and rotate said multi-layer column means around said second axis.
Claim 14
Independent Claim
87 words
An apparatus for continuous countercurrent chromatography comprising a support, frame means rotatably mounted on said support for rotation on a first axis, multi-layer helically coiled separation column means rotatably mounted on said frame means for rotation on a second axis parallel to and spaced from said first axis, inlet and outlet flow tubes connected to the terminal ends of said multi-layer helically coiled column means, and means to simultaneously revolve said frame means around said first axis and rotate said multi-layer column means around said second axis.
References Cited (Backward Citations)
US4430216A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-12-11 | 1988-06-11 | 1988-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-11 | 1992-06-11 | 1992-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-11 | 1996-06-11 | 1996-12-11 | $7700.00 | Window Closed / Lapsed |