US3859192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the measurement of the oxygen content of a gas stream
Assignee: HAYS-REPUBLIC Corp A SUBSIDIARY OF OPTIMUM CONTROL CORPORATION AN OH CORP
•
Filing: 1973-08-17
•
Granted: 1975-01-07
•
Expires: 1993-08-17
Abstract
Abstract A sensor measures the oxygen content of sample gas flowing in a stream in a conduit. A tube of solid electrolyte material has a closed end and an open end adapted to be secured to the conduit with the open end in communication with the sample stream flowing in the conduit. A baffle disposed inside the tube has one end extending into the conduit and the other end extending to the closed end of the tube so that a portion of the sample gas stream is deflected across one surface of the baffle into the closed end of the tube and over the other surface of the baffle back into the sample gas stream. Electrodes on the outer and inner surface of the closed end of the tube measure the oxygen partial pressure of the deflected portion of the sample stream.
Inventors
- 👤 Lyle K Barnes
- 👤 J Kenneth Jacobsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:32
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/406; G01N27/407
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
176 words
A SENSOR FOR MEASURING THE OXYGEN CONTENT OF SAMPLE GAS FLOWING IN A STREAM IN A CONDUIT COMPRISING: A TUBE OF SOLID ELECTROLYTE MATERIAL EXHIBITING THE PROPERTY OF OXYGEN ION CONDUCTIVITY WITH NEGLIGABLE ELECTRONIC CONDUCTIVITY, SAID TUBE HAVING A CLOSED END AN OPEN END ADAPTED TO BE IN COMMUNICATION WITH THE SAMPLE STREAM FLOWING IN SAID CONDUIT, A PAIR OF ELECTRODES RESPECTIVELY DISPOSED ON THE OUTSIDE SURFACE AND ON THE INSIDE SURFACE OF SAID TUBE, A HEATER FOR HEATING THAT PORTION OF SAID TUBE WHICH SAID ELECTRODES ARE IN CONTACT, A BAFFLE DISPOSED INSIDE OF SAID TUBE AND HAVING ONE END THEREOF EXTENDING TO EXTEND INTO SAID CONDUIT, THE OTHER END THEREOF EXTENDING TO THE REGION OF SAID ELECTRODES SO THAT A PORTION OF SAID SAMPLE GAS STREAM IS DEFLECTED ACROSS ONE SURFACE OF SAID BAFFLE INTO THE REGION OF SAID ELECTRODES AND THENCE OVER THE OTHER SURFACE OF SAID BAFFLE BACK INTO SAID SAMPLE GAS STREAM, AND MEANS CONNECTED TO SAID ELECTRODES FOR MEASURING THE OXYGEN CONTENT OF SAID PORTION OF SAID SAMPLE GAS STREAM.
Claim 2
Dependent Claim
176 words
A SENSOR FOR MEASURING THE OXYGEN CONTENT OF SAMPLE GAS FLOWING IN A STREAM IN A CONDUIT COMPRISING: A TUBE OF SOLID ELECTROLYTE MATERIAL EXHIBITING THE PROPERTY OF OXYGEN ION CONDUCTIVITY WITH NEGLIGABLE ELECTRONIC CONDUCTIVITY, SAID TUBE HAVING A CLOSED END AN OPEN END ADAPTED TO BE IN COMMUNICATION WITH THE SAMPLE STREAM FLOWING IN SAID CONDUIT, A PAIR OF ELECTRODES RESPECTIVELY DISPOSED ON THE OUTSIDE SURFACE AND ON THE INSIDE SURFACE OF SAID TUBE, A HEATER FOR HEATING THAT PORTION OF SAID TUBE WHICH SAID ELECTRODES ARE IN CONTACT, A BAFFLE DISPOSED INSIDE OF SAID TUBE AND HAVING ONE END THEREOF EXTENDING TO EXTEND INTO SAID CONDUIT, THE OTHER END THEREOF EXTENDING TO THE REGION OF SAID ELECTRODES SO THAT A PORTION OF SAID SAMPLE GAS STREAM IS DEFLECTED ACROSS ONE SURFACE OF SAID BAFFLE INTO THE REGION OF SAID ELECTRODES AND THENCE OVER THE OTHER SURFACE OF SAID BAFFLE BACK INTO SAID SAMPLE GAS STREAM, AND MEANS CONNECTED TO SAID ELECTRODES FOR MEASURING THE OXYGEN CONTENT OF SAID PORTION OF SAID SAMPLE GAS STREAM.
Claim 3
Dependent Claim
22 words
The apparatus recited in claim 1 wherein said electrodes are platinum bands disposed on the inside and outside surface of said tube.
Claim 4
Dependent Claim
44 words
The apparatus recited in claim 2 further comprising: platinum conductive strips on said tube extending from said electrode to the connections to said measuring means, and a ceramic coating over the conductive strip on the inside of said tube to protect it from corrosion.
Claim 5
Dependent Claim
18 words
The sensor recited in claim 1 wherein said tube is constructed of calcium stabilized zirconium oxide solid electrolyte.
References Cited (Backward Citations)
US3620931A
Cited
US3791937A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |