US3640822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and an apparatus for separating a segmentation medium from a stream of a segmented main fluid
Assignee: Czech Academy of Sciences
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Filing: 1969-09-15
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Granted: 1972-02-08
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Expires: 1989-09-15
Abstract
Abstract Segmented main fluid in a capillary stream is allowed to flow through a main tubing equipped with a capillary slot communicating with an offtake pipe. Conditions within the apparatus are maintained such that capillary forces and surface tension inherent in the elements of the segmentation medium and other parts of the system prevent their passage through the capillary slot, through which the main fluid only is taken off in a continuous stream. The length of the capillary slot in the direction of the main capillary tubing axis exceeds the maximum contact length of a segmentation medium element; the main fluid may be taken off substantially from a single one only, or from not more than two neighboring segments of the main medium, so that contamination by the contents of other segments is negligible.
Inventors
- 👤 Jiri Hrdina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:09
CPC Classifications
G; G01; G01N; G01N35/00; G01N35/08; Y; Y10; Y10T; Y10T436/00; Y10T436/11; Y10T436/117497; Y10T436/118339
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
30 words
The method according to claim 1 including subjecting said liquid to capillary action at said port, said segmentation elements having different fluid properties and being unaffected by said capillary action.
Claim 2
Dependent Claim
32 words
The method according to claim 1 including conducting liquid from said port to a chromatographic flow cell, whereby successive liquid segments of said stream pass continuously through said flow cell for analysis.
Claim 3
Dependent Claim
272 words
In apparatus for liquid chromatographic apparatus of the type including a chromatographic column, a tube for conducting a stream of eluate liquid from the column for analyzing the eluate liquid, and including a device for inserting fluid segmentation elements in said tube at intervals in said eluate stream to divide said stream into segments, said apparatus further including means for separating said eluate liquid from said elements and the remainder of said stream, said separating means comprising: means forming a tubular passage for conducting the segmented fluid stream from an upstream region to a downstream region, said passage means having an impervious internal wall extending between said regions and defining a flow passage for said stream, said wall having a port in communication with said tubular passage, said port having a length extending in the direction of flow through said passage, whereby said length of said port is greater thAn the length of said element, and having a width extending transverse to the direction of flow in said passage, whereby said port width is less than the width of said element said port length being greater than said port width, and a discharge conduit connected with said port for conducting eluate to said flow cell, whereby the length of the elements introduced into said eluate stream are shorter than the length of said port to allow eluate to be drawn into said discharge conduit while surface tension in said elements prevents entry of said element fluid into said discharge conduit and said elements move continuously from said upstream region to said downstream region while eluate liquid is withdrawn through said discharge conduit.
Claim 4
Dependent Claim
25 words
The apparatus according to claim 4 wherein the width of said port is of capillary size and is in the form of a continuous slot.
Claim 5
Dependent Claim
19 words
The apparatus according to claim 4 including chamber means between said port and said conduit for collecting said fluid.
Claim 6
Dependent Claim
32 words
The apparatus according to claim 5 including a plurality of bridge members extending transversely across said port, said bridge members being spaced apart from each other along the length of said port.
Claim 7
Dependent Claim
20 words
The apparatus according to claim 5 including chamber means between said port and said discharge conduit for collecting eluate fluid.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |