Patent US4231990A successfully refreshed from Google Patents.
US4231990A
Expired / Lapsed
US
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Apparatus for the treatment of fluids
Assignee: Anarec SA
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Filing: 1978-08-21
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Granted: 1980-11-04
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Expires: 1998-08-21
Abstract
Abstract A reactor for preparing and analyzing fluids comprising means for taking a determined dose of a sample and transferring it in an air-tight chamber, means for taking, if necessary, a determined dose of a diluent and transferring it in the same chamber, means for taking at least one determined dose of a reagent and for transferring it in the same chamber, means for mixing the sample with the reagent or the reagents together with a diluent (if necessary) out of contact with the atmosphere, as well as means for transferring the obtained mixture of solutions to any system for detecting the result or for transferring part of said mixture to another reactor or to another use device.
Inventors
- 👤 Christian F. Jottier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:34
CPC Classifications
G; G01; G01N; G01N35/00; G01N35/10; G01N35/1095; G01N35/1097; G01N31/00; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389; Y10T137/86445; Y10T137/86461
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
280 words
An apparatus for the treatment of fluids comprising a single air-tight chamber having a variable inner volume, in which at least two fluids may be introduced and treated and from which the fluids may be removed after treatment, a reciprocable piston which tightly closes one end of said chamber, at least two inlet pipes or ducts connected at one end to said chamber and at the other end to a fluid source, a valve being inserted in each of said inlet pipes or ducts near the end thereof connected to said chamber, an outlet pipe equipped with a valve near the end thereof connected to said chamber, means for moving the reciprocable piston and means for selectively opening and closing the valves inserted in said inlet and outlet pipes, a predetermined amount of each fluid being selectively introduced into said chamber via said selectively opened valves inserted in said inlet pipes or ducts by means of a depression or suction created in said chamber, said moving means being operable to move said piston along a predetermined stroke in a direction causing an increase in the inner volume of said chamber to create said suction, the treatment of the fluids in the chamber being effected when all the valves inserted in the inlet and outlet pipes are closed, and the removal of the treated fluids from the treatment chamber being effected via said selectively opened valve inserted in said outlet pipe by the pressure created in said chamber by the piston when the latter is moved in an opposite direction causing such a decrease of the inner volume of the chamber that said inner volume is entirely occupied by the piston.
Claim 2
Independent Claim
280 words
An apparatus for the treatment of fluids comprising a single air-tight chamber having a variable inner volume, in which at least two fluids may be introduced and treated and from which the fluids may be removed after treatment, a reciprocable piston which tightly closes one end of said chamber, at least two inlet pipes or ducts connected at one end to said chamber and at the other end to a fluid source, a valve being inserted in each of said inlet pipes or ducts near the end thereof connected to said chamber, an outlet pipe equipped with a valve near the end thereof connected to said chamber, means for moving the reciprocable piston and means for selectively opening and closing the valves inserted in said inlet and outlet pipes, a predetermined amount of each fluid being selectively introduced into said chamber via said selectively opened valves inserted in said inlet pipes or ducts by means of a depression or suction created in said chamber, said moving means being operable to move said piston along a predetermined stroke in a direction causing an increase in the inner volume of said chamber to create said suction, the treatment of the fluids in the chamber being effected when all the valves inserted in the inlet and outlet pipes are closed, and the removal of the treated fluids from the treatment chamber being effected via said selectively opened valve inserted in said outlet pipe by the pressure created in said chamber by the piston when the latter is moved in an opposite direction causing such a decrease of the inner volume of the chamber that said inner volume is entirely occupied by the piston.
Claim 3
Dependent Claim
24 words
Apparatus according to claim 1, wherein said means for moving the piston comprises a step-by-step motor acting on the piston through a rack system.
Claim 4
Dependent Claim
32 words
Apparatus according to claim 1, wherein the fluids treated in said chamber are mixed by repeatedly reciprocating said piston when all the valves inserted in the inlet and outlet pipes are closed.
Claim 5
Dependent Claim
65 words
An apparatus according to claim 1, wherein the fluids treated in said chamber are mixed by creating an additional depression or suction in the chamber so as to admit a gas from a pipe connected at one end to said chamber and to its other end to a gas source via a valve inserted in the pipe near the end thereof connected to the chamber.
Claim 6
Dependent Claim
51 words
An apparatus according to claim 1, and further comprising rinsing means comprising a pipe or duct connected at one end to a source of rinsing or washing liquid and at the other end to said chamber, a valve being inserted in said pipe near the end thereof connected to the chamber.
Claim 7
Dependent Claim
29 words
An apparatus according to claim 1, in which the fluid source to which one of said inlet pipes is connected is a source of a fluid to be analyzed.
Claim 8
Dependent Claim
33 words
An apparatus according to claim 6, in which the fluid source to which one of the inlet pipes is connected is a source of a reagent for treating the fluid to be analyzed.
Claim 9
Dependent Claim
21 words
An apparatus according to claim 1, and further comprising means for controlling the temperature of the contents of the treatment chamber.
Claim 10
Dependent Claim
51 words
An apparatus according to claim 8, in which the means for controlling the temperature of the chamber contents comprises a closed fluid circuit including a heat exchanger, through which a heating or cooling fluid is caused to flow, said circuit having a part extending axially through the piston and the chamber.
References Cited (Backward Citations)
US3192968A
Cited
US3192969A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-11-04 | 1984-05-05 | 1984-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-04 | 1988-05-05 | 1988-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-04 | 1992-05-05 | 1992-11-04 | $7700.00 | Window Closed / Lapsed |