US3888754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ozone measuring cell
Assignee: Max-Planck-Gesellschaft zur Förderung der Wissenschaften eV
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Filing: 1973-11-08
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Granted: 1975-06-10
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Expires: 1993-11-08
Abstract
Abstract Ozone containing gas is conducted through a measuring chamber containing a potassium iodide solution. Electrodes connectable by means of a direct voltage source are dipped into two electrode chambers, said electrode chambers being connected merely by a communicating capillary tube. The stream flowing between the electrodes due to the reaction between ozone and potassium iodide constitutes a measure for the ozone concentration in the gas.
Inventors
- 👤 Helmut Karl Ernst Tiefenau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:24
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/404; G01N27/4045
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
214 words
OZONE MEASURING CELL COMPRISING: A. A MEASURING CHAMBER WHICH MAY BE FLUSHED BY AN OZONECONTAINING GAS; B. A CATHODE AND ANODE ARRANGED WITHIN SAID CHAMBER IN SUCH A MANNER THAT POTASSIUM IODINE REACTION SOLUTION PASSES CONTINUOUSLY FROM CATHODE TO ANODE; C. SAID MEASURING CHAMBER INCLUDING A CATHODE CHAMBER WHICH CONTAINS SAID CATHODE AND AN ANODE CHAMBER SEPARATE FROM SAID CATHODE CHAMBER WHICH CONTAINS SAID ANODE; D. SAID CATHODE CHAMBER BEING CONNECTED TO SAID ANODE CAHAMBER BY A CAPILLARY TUBE; E. MEANS FOR SUPPLYING OZONE-CONTAINING GAS TO THE LOWER END OF SAID CATHODE CHAMBER; F. SAID CATHODE CHAMBER BEING DIVIDED INTO A REACTION PORTION AND A SEPARATING PORTION THEREABOVE; G. MEANS FOR SUPPLYING SAID REACTION SOLUTION TO SAID CATHODE CHAMBER AT A POINT BETWEEN THE REACTION AND SEPARATING PORIONS THEREOF; H. A SEPARATING CHAMBER POSITIONED NEXT TO SAID ANODE CHAMBER; I. SAID CATHODE AND ANODE CHAMBERS AND SAID SEPARATING CHAMBER BEING CONSTRUCTED IN AN AIRTIGHT MANNER; J. MEANS CONNECTING SAID ANODE CHAMBER WITH THE SEPARATING PORTION OF SAID CATHODE CHAMBER AND ADAPTED TO SUPPLY A GAS THERETO; K. MEANS CONNECTING SAID ANODE CHAMBER WITH SAID SEPARATING CHAMBER AND ADAPTED TO DISCHARGE GAS FROM SAID ANODE CHAMBER; AND L. MEANS FOR REMOVING SAID REACTION SOLUTION FROM SAID SEPARATING CHAMBER AT THE UPPER LIQUID SURFACE LEVEL THEREOF.
Claim 2
Dependent Claim
214 words
OZONE MEASURING CELL COMPRISING: A. A MEASURING CHAMBER WHICH MAY BE FLUSHED BY AN OZONECONTAINING GAS; B. A CATHODE AND ANODE ARRANGED WITHIN SAID CHAMBER IN SUCH A MANNER THAT POTASSIUM IODINE REACTION SOLUTION PASSES CONTINUOUSLY FROM CATHODE TO ANODE; C. SAID MEASURING CHAMBER INCLUDING A CATHODE CHAMBER WHICH CONTAINS SAID CATHODE AND AN ANODE CHAMBER SEPARATE FROM SAID CATHODE CHAMBER WHICH CONTAINS SAID ANODE; D. SAID CATHODE CHAMBER BEING CONNECTED TO SAID ANODE CAHAMBER BY A CAPILLARY TUBE; E. MEANS FOR SUPPLYING OZONE-CONTAINING GAS TO THE LOWER END OF SAID CATHODE CHAMBER; F. SAID CATHODE CHAMBER BEING DIVIDED INTO A REACTION PORTION AND A SEPARATING PORTION THEREABOVE; G. MEANS FOR SUPPLYING SAID REACTION SOLUTION TO SAID CATHODE CHAMBER AT A POINT BETWEEN THE REACTION AND SEPARATING PORIONS THEREOF; H. A SEPARATING CHAMBER POSITIONED NEXT TO SAID ANODE CHAMBER; I. SAID CATHODE AND ANODE CHAMBERS AND SAID SEPARATING CHAMBER BEING CONSTRUCTED IN AN AIRTIGHT MANNER; J. MEANS CONNECTING SAID ANODE CHAMBER WITH THE SEPARATING PORTION OF SAID CATHODE CHAMBER AND ADAPTED TO SUPPLY A GAS THERETO; K. MEANS CONNECTING SAID ANODE CHAMBER WITH SAID SEPARATING CHAMBER AND ADAPTED TO DISCHARGE GAS FROM SAID ANODE CHAMBER; AND L. MEANS FOR REMOVING SAID REACTION SOLUTION FROM SAID SEPARATING CHAMBER AT THE UPPER LIQUID SURFACE LEVEL THEREOF.
Claim 3
Dependent Claim
31 words
Ozone measuring cell of claim 1 wherein said capillary tube connecting said cathode and said anode chambers is positioned at the bottom end of said cathode chamber and/or said anode chamber.
Claim 4
Dependent Claim
31 words
Ozone measuring cell of claim 1 wherein the means connecting said anode chamber with the separating portion of said cathode chamber is positioned at the upper end of said cathode chamber.
Claim 5
Dependent Claim
35 words
Ozone measuring cell of claim 1 wherein the means connecting said anode chamber and said separating chamber is positioned at the same level as said means for supplying said reaction solution to said cathode chamber.
Claim 6
Dependent Claim
30 words
Ozone measuring cell of claim 1 wherein said cathode, anode and separating chambers are cylindrical chambers in a block housing each of which is closed off by screw plug means.
Claim 7
Dependent Claim
13 words
Ozone measuring cell of claim 1 wherein said cathode is a platinum net.
Claim 8
Dependent Claim
13 words
Ozone measuring cell of claim 1 wherein said anode is a platinum wire.
References Cited (Backward Citations)
US3428542A
Cited
US3639830A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |