US5087425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for flow-injection analysis
Assignee: Helmholtz Centre for Infection Research
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Filing: 1988-10-28
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Granted: 1992-02-11
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Expires: 2008-10-28
Abstract
Abstract The invention relates to a device for flow-injection analysis having a reaction loop, one or more pumps, an injection valve, one or more detectors and an evaluating device.
Inventors
- 👤 Josef Flossdorf
- 👤 Neophytos Papamichael
- 👤 Detlef Hanisch
- 👤 Henning Schillig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:51
CPC Classifications
G; G01; G01N; G01N35/00; G01N35/08; G01N35/085; Y; Y10; Y10T; Y10T436/00; Y10T436/11; Y10T436/117497
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
103 words
Flow-injection analysis apparatus, which comprises; a reaction loop in flow communication with (i) a pump attached to a first base plate; (ii) an injection valve attached to a second base plate; and (iii) a detector attached to a third base plate; each of the first, second and third base plates being provided with a guide means, for slidable mounting on a support mounting; the pump, the injection valve and the detector, each with its base plate being substantially uniform in width and height; the first, second and third base plates being removably joined together on the support mounting by a releasable securing means.
Claim 2
Dependent Claim
103 words
Flow-injection analysis apparatus, which comprises; a reaction loop in flow communication with (i) a pump attached to a first base plate; (ii) an injection valve attached to a second base plate; and (iii) a detector attached to a third base plate; each of the first, second and third base plates being provided with a guide means, for slidable mounting on a support mounting; the pump, the injection valve and the detector, each with its base plate being substantially uniform in width and height; the first, second and third base plates being removably joined together on the support mounting by a releasable securing means.
Claim 3
Dependent Claim
23 words
Apparatus according to claim 1, wherein the support mounting is a track and each of the base plates guide means is a dovetail.
Claim 4
Dependent Claim
15 words
Apparatus according to claim 1, wherein the base plates are clamped to the support mounting.
Claim 5
Dependent Claim
37 words
Apparatus according to claim 1, which further comprises a plurality of hoses connecting the pump, the injection valve and the detector to the reaction loop, said plurality of hoses being joined together to form a hose track.
Claim 6
Dependent Claim
26 words
Apparatus according to claim 1, which further comprises electrical connecting lines from the pump, the injection valve and the detector in the form of a bus.
Claim 7
Dependent Claim
18 words
Apparatus according to claim 5, wherein the bus further comprises ribbon cables or multicore cables and plug connections.
Claim 8
Dependent Claim
32 words
Apparatus according to claim 5, wherein the hose track or the bus is arranged on one side of the pump, injection valve or detect in the longitudinal direction of the support mounting.
Claim 9
Dependent Claim
25 words
Apparatus according to claim 1, wherein the support mounting is secured to a front plate, perpendicular to the front plate, and includes a sliding guide.
Claim 10
Dependent Claim
32 words
Apparatus according to claim 1, which further comprises a perpendicular support plate secured to the base plates and wherein the pump or the injection valve is secured to the perpendicular support plate.
Claim 11
Dependent Claim
72 words
Apparatus according to claim 9, which further comprises a pump drive motor means for operating the pump and wherein the pump or the injection valve is secured to one side of the perpendicular support plate and the drive motor means is secured to the opposite side of the perpendicular support plate and wherein in each case a pin fits through the perpendicular support plate into the pump or a valve shaft coupling.
Claim 12
Dependent Claim
35 words
Apparatus according to claim 1, wherein the reaction loop comprises a hose wound on an internal member inserted into a heat-insulated outer housing which contains heating means and a thermostat mounted on the base plates.
Claim 13
Dependent Claim
93 words
Apparatus according to claim 1, which further comprises a diffusion- and pH-sensor stage mounted on the third base plate and wherein the diffusion- and pH-sensor stage comprises (a) housing; (b) a gas exchanger arranged in said housing; (c) a first conduit for a gas-donor stream passing into said housing; (d) a second conduit for a gas-acceptor stream passing into said housing; said first and second conduits each entering into said gas exchanger; (e) a pH-sensitive through-flow electrode having a liquid membrane; (f) and a through-flow reference electrode, said electrodes projecting into said housing.
Claim 14
Dependent Claim
13 words
Apparatus according to claim 12, wherein the pH-sensitive electrode has a plastic membrane.
Claim 15
Dependent Claim
56 words
Apparatus according to claim 1, wherein the detector is a photometer which comprises a housing in which is arranged a through-flow cell having a perpendicular cell bore and an illumination source which is arranged at one end of the cell bore and a photoelectric sensor which is arranged at the other end of the cell bore.
Claim 16
Dependent Claim
13 words
Apparatus according to claim 14, wherein the illumination source is a luminescent diode.
Claim 17
Dependent Claim
17 words
Apparatus according to claim 14 wherein the illumination source comprises photoconductive fiber cables connected to external lamps.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-02-10 | 1995-08-12 | 1996-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-10 | 1999-08-12 | 2000-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-10 | 2003-08-12 | 2004-02-11 | $7700.00 | Window Closed / Lapsed |