Patent US3972792A successfully refreshed from Google Patents.
US3972792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for determination of chemicals in a sample flow
Assignee: Keskuslaboratorio Centrallaboratorium Oy AB
•
Filing: 1974-04-08
•
Granted: 1976-08-03
•
Expires: 1994-04-08
Abstract
Abstract The present invention discloses an apparatus for the determination of chemicals in a sample flow, which includes in combination a hollow conical chamber having large and small diameter portions. An entrance conduit communicates with the large diameter portion of the chamber to introduce a sample flow into the chamber in a generally tangential direction and the sample travels in a generally spirally extending path to the small diameter portion. A first axially extending conduit is connected to the small diameter portion to provide for the exit of a heavier fraction of the sample flow from the conical chamber. A second exit conduit is connected in an axial manner to the large diameter portion of the conical chamber to exit a lighter fraction of the sample flow from the conical chamber. First and second spaced electrodes are positioned in the first exit conduit.
Inventors
- 👤 Torolf Tom Paul Laxen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:14
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/28
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
167 words
Apparatus for the determination of concentrations of chemicals by means of a voltametric method in a sample flow including in combination a hollow conical chamber having an upper large diameter portion and a lower small diameter portion, entrance conduit means communicating with said large diameter portion to introduce a sample flow into the upper portion of said conical chamber in a generally tangential direction where it travels in a generally spiraling path to said lower small diameter portion, a first exit conduit axially connected to said small diameter portion of said conical chamber, outside and below the conical chamber, to exit a heavier portion of said sample flow from said conical chamber, a second exit conduit axially connected to said large diameter portion of said conical chamber, above the conical chamber, to exit a lighter portion of said sample flow from said conical chamber and first and second spaced measurement electrodes positioned inside said first exit conduit immediately adjacent said small diameter portion of said conical chamber.
Claim 2
Dependent Claim
167 words
Apparatus for the determination of concentrations of chemicals by means of a voltametric method in a sample flow including in combination a hollow conical chamber having an upper large diameter portion and a lower small diameter portion, entrance conduit means communicating with said large diameter portion to introduce a sample flow into the upper portion of said conical chamber in a generally tangential direction where it travels in a generally spiraling path to said lower small diameter portion, a first exit conduit axially connected to said small diameter portion of said conical chamber, outside and below the conical chamber, to exit a heavier portion of said sample flow from said conical chamber, a second exit conduit axially connected to said large diameter portion of said conical chamber, above the conical chamber, to exit a lighter portion of said sample flow from said conical chamber and first and second spaced measurement electrodes positioned inside said first exit conduit immediately adjacent said small diameter portion of said conical chamber.
Claim 3
Dependent Claim
22 words
Apparatus as claimed in claim 1, wherein an adjustable valve is positioned in said second exit conduit to regulate the flow therethrough.
Claim 4
Dependent Claim
26 words
Apparatus as claimed in claim 2, wherein T-tube conduit means is connected to said entrance conduit means to introduce a chemical composition into said sample flow.
Claim 5
Dependent Claim
16 words
Apparatus as claimed in claim 3, wherein a thermocompensator is interposed in said entrance conduit means.
References Cited (Backward Citations)
US1505104A
Cited
US2768135A
Cited
US2884366A
Cited
US3464910A
Cited
US3464908A
Cited
US3732159A
Cited
US3767046A
Cited
US3755124A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-03 | 1980-02-02 | 1980-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-03 | 1984-02-02 | 1984-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-03 | 1988-02-02 | 1988-08-03 | $7700.00 | Window Closed / Lapsed |