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US3791400A
Expired / Lapsed
US
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Method and arrangement for segmentation of a stream of a liquid medium conveyed by a peristaltic pump
Assignee: Czech Academy of Sciences
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Filing: 1972-02-18
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Granted: 1974-02-12
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Expires: 1992-02-18
Abstract
Abstract A programmed discharge of a liquid medium conveyed by a peristaltic pump and segmented by segmentation pistons of a segmentation medium introduced into the stream of this liquid medium is achieved by connection of a blinded hose filled with auxiliary medium to the tubing conveying the segmentation medium, with means for periodically compressing and releasing said blinded hose, thus periodically increasing and decreasing the pressure of the segmentation medium according to a preselected programm.
Inventors
- 👤 J Hrdina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:10
CPC Classifications
G; G01; G01N; G01N35/00; G01N35/08; F; F04; F04B; F04B43/00; F04B43/12; F04B43/1223; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/8593; Y10T137/85978; Y10T137/86131; Y10T137/86139; Y10T137/86147
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
151 words
A system for the segmentation of a stream of a liquid medium conveyed by a peristaltic pump, through the introduction of segmenting pistons of a segmentation medium into the stream of said liquid medium comprising a peristaltic pump having a base supporting flexible hoses conveying the respective medium and occlusion organs adapted to perform a relative movement with respect to said base causing, by successive compression of said flexible hoses, a movement of these media in said flexible hoses a first of said flexible hoses containing a liquid medium to be segmented a second of said flexible hoses containing a segmentation medium, both said streams of these media meeting at a segmentation place, a third of said flexible hoses blinded at one end and containing an auxiliary medium connected to the second hose conveying the segmentation medium, and means for periodically generating a compression and release of said third flexible hose.
Claim 2
Independent Claim
151 words
A system for the segmentation of a stream of a liquid medium conveyed by a peristaltic pump, through the introduction of segmenting pistons of a segmentation medium into the stream of said liquid medium comprising a peristaltic pump having a base supporting flexible hoses conveying the respective medium and occlusion organs adapted to perform a relative movement with respect to said base causing, by successive compression of said flexible hoses, a movement of these media in said flexible hoses a first of said flexible hoses containing a liquid medium to be segmented a second of said flexible hoses containing a segmentation medium, both said streams of these media meeting at a segmentation place, a third of said flexible hoses blinded at one end and containing an auxiliary medium connected to the second hose conveying the segmentation medium, and means for periodically generating a compression and release of said third flexible hose.
Claim 3
Dependent Claim
25 words
The system as set forth in claim 1, wherein the release phase of said third flexible blinded hose is a multiple of its compression phase.
Claim 4
Dependent Claim
100 words
The system as set forth in claim 1, wherein the third blinded hose is supported by a correction extension of said pump base so as to be in the track of the occluding organs of the peristaltic pump, the part of said third blinded hose near the blinded and being steeply inclined with respect to the track of the occluding organs, the following part of said third blinded hose gradually receding from said track in the direction of movement of the occluding organs, and the surface of the correction extension supporting the blinded hose being curved near the pump base.
Claim 5
Dependent Claim
30 words
The system as set forth in claim 3, wherein the correction extension is provided with means for adjustment of its position with respect to the track of the occluding organs.
Claim 6
Dependent Claim
43 words
The system as set forth in claim 4, wherein one of said means for adjustment comprising an adjusting screw situated close to the pump base the axis of said adjusting screw passing through the apex of the curved surface of the correction extension.
Claim 7
Dependent Claim
36 words
The system as set forth in claim 1, wherein the blinded hose is connected to the tubing conveying the segmentation medium via a connecting hose of a smaller diameter and higher rigidity than the blinded hose.
Claim 8
Dependent Claim
27 words
The system as set forth in claim 1, wherein the means for compressing and releasing the blinded hose comprises a pressure jaw controlled by a cam mechanism.
Claim 9
Dependent Claim
44 words
The system as set forth in claim 1, including a tube adapted to be connected with the open end of the blinded hose, a container filled with a liqUid to be mixed, the end of said tube terminating below the surface of this liquid.
Claim 10
Dependent Claim
35 words
The system as set forth in claim 8, wherein said container is connected by a flexible hose with means for emptying and refilling this container and with means for closing and opening said flexible hose.
References Cited (Backward Citations)
US3524366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |