US3616408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxygen sensor
Assignee: Westinghouse Electric Corp
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Filing: 1968-05-29
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Granted: 1971-10-26
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Expires: 1988-05-29
Abstract
Abstract An oxygen solid-electrolyte cell is provided having a pair of longitudinal holes. The interior of each of the holes is coated with a porous platinum coating which provides the electrodes of the cell. Each of the holes is adapted to be connected to a separate source of gas to permit flow of different gases over the electrodes within the holes.
Inventors
- 👤 Willaim M Hickam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:10
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/406; G01N27/407; F; F23; F23N; F23N5/00; F23N5/003; F23N5/006; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2499; Y10T137/2509
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
21 words
The device in claim 1 in which said tubular members are spaced apart by substantially an equal distance along their length.
Claim 2
Dependent Claim
171 words
An oxygen sensor gauge comprising a solid-electrolyte means exhibiting the property of conductivity of oxygen ions with negligible electronic conductivity, a first electronically conductive tubular electrode having first and second surfaces with said first surface disposed in contact with said electrolyte means, a second electronically conductive tubular electrode having first and second surfaces with said first surface disposed in contact with said electrolyte means, a first means operatively associated with said first electrode for directing flow of a reference gas over the second surface of said first electrode and a second means operatively associated with said second electrodes for directing a flow of a sample gas over said second surface of said second electrode, said first and second means including means for controlling the flow of said gases to provide a similar rate of flow of said gases over their respective electrodes, the first surfaces of said first and second tubular electrodes being the outer surfaces and the second surfaces of said first and second tubular electrodes being the inner surfaces.
Claim 3
Dependent Claim
17 words
The device in claim 3 in which said tubular eLectrodes are spaced apart in a noncoaxial relationship.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |