Patent US2843769A successfully refreshed from Google Patents.
US3763705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for taking samples of the contents of capillary tubes
Assignee: Individual
•
Filing: 1972-02-14
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Granted: 1973-10-09
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Expires: 1992-02-14
Abstract
Abstract When taking samples of liquids contained in capillary tubes a block is used having a first bore of a diameter corresponding substantially to the external diameter of the capillary tubes and a second bore of a greater diameter. The two bores terminate in the block at the same position where they are in communication with each other. The capillary tube is introduced into the first bore and sealed in relation to the block and a suction tube is introduced into the second bore, where this tube is also sealed in relation to the block, which functions as a coupling member between the capillary tube and the suction tube the ends of which are very close to each other in a very small cavity within the block. Sealing rings may be present in the bores or the block may be of an elastic rubber-like material, whereby this material in itself provides the required sealing.
Inventors
- 👤 C Strande
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:18
CPC Classifications
G; G01; G01N; G01N35/00; G01N35/10; G01N35/1095
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
128 words
A device for taking samples of the contents of capillary tubes, comprising a block having a first bore of a diameter corresponding substantially to the external diameter of the capillary tubes and terminating in the interior of the block and having a second bore terminating in the interior of the block at the same place as the first bore and being in communication therewith, suction means to extract the sample from the capillary tube, a suction tube forming part of the suction means, means to introduce the suction tube into the second bore, first sealing means to provide a tight sealing of the capillary tube in relation to the block, and second sealing means to provide a tight sealing of the suction tube in relation to the block.
Claim 2
Independent Claim
128 words
A device for taking samples of the contents of capillary tubes, comprising a block having a first bore of a diameter corresponding substantially to the external diameter of the capillary tubes and terminating in the interior of the block and having a second bore terminating in the interior of the block at the same place as the first bore and being in communication therewith, suction means to extract the sample from the capillary tube, a suction tube forming part of the suction means, means to introduce the suction tube into the second bore, first sealing means to provide a tight sealing of the capillary tube in relation to the block, and second sealing means to provide a tight sealing of the suction tube in relation to the block.
Claim 3
Dependent Claim
26 words
A device as claimed in claim 1, wherein the first and second sealing means are constituted by sealing rings embedded in the material of the block.
Claim 4
Dependent Claim
28 words
A device as claimed in claim 1, wherein the block is of an elastic rubber-like material, whereby this material in itself constitutes the first and second sealing means.
Claim 5
Dependent Claim
35 words
A device as claimed in claim 1, wherein the suction tube has a first conical surface pointing towards the end of the tube, and wherein the second bore has a correspondingly shaped second conical surface.
Claim 6
Dependent Claim
37 words
A device as claimed in claim 4, further comprising spring means in the suction means to provide an elastic engagement of the first and second conical surfaces when the suction tube is introduced into the second bore.
Claim 7
Dependent Claim
96 words
A block to be used when taking samples from the contents of a capillary tube, having a first bore of a diameter corresponding substantially to the external diameter of the capillary tube and terminating in the block, and a second bore of greater diameter than the first bore, terminating at the same place as the first bore and being in communication herewith, comprising a first sealing ring embedded in the block and surrounding the axis of the first bore, and a second sealing ring embedded in the block and surrounding the axis of the second bore.
Claim 8
Dependent Claim
96 words
A block to be used when taking samples from the contents of a capillary tube, having a first bore of a diameter corresponding substantially to the external diameter of the capillary tube and terminating in the block, and a second bore of greater diameter than the first bore, terminating at the same place as the first bore and being in communication herewith, comprising a first sealing ring embedded in the block and surrounding the axis of the first bore, and a second sealing ring embedded in the block and surrounding the axis of the second bore.
Claim 9
Dependent Claim
66 words
A block of an elastic rubber-like material to be used when taking samples from the contents of a capillary tube, having a first bore of a diameter corresponding to the external diameter of the capillary tube and terminating in the block, and a second bore of greater diameter than the first bore, terminating at the same place as the first bore and being in communication herewith.
Claim 10
Dependent Claim
66 words
A block of an elastic rubber-like material to be used when taking samples from the contents of a capillary tube, having a first bore of a diameter corresponding to the external diameter of the capillary tube and terminating in the block, and a second bore of greater diameter than the first bore, terminating at the same place as the first bore and being in communication herewith.
Claim 11
Dependent Claim
25 words
A block as claimed in claim 7, wherein the second bore has a conical surface terminating the second bore in the interior of the block.
References Cited (Backward Citations)
US3253468A
Cited
US3545932A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |