US3610044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic temperature sensing device
Assignee: United States Department of the Air Force
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Filing: 1968-06-21
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Granted: 1971-10-05
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Expires: 1988-06-21
Abstract
Abstract A PENUMATIC TEMPERATURE SENSING OSCILLATOR HAS A GAS, FOR WHICH THE TEMPERATURE DETERMINATION IS DESIRED, FED THROUGH A NOZZLE TO IMPINGE ON A BLUNT BEAM SPLITTER WITHIN A CAVITY. THE REFLECTION OF ACOSUTIC SIGNALS OFF THE BLUNT BEAM SPLITTER AND CAVITY WALLS RESULTS IN THE PROPAGATION OF A PREDOMINANT CAVITY FREQUENCY WHICH VARIES SINUSODIALLY WITH TIME THAT IS A FUNCTION OF THE SQUARE ROOT OF GAS TEMPERATURE WITHIN THE CAVITY. FLOW DIRECTING MEANS ARE PROVIDED WITHIN THE CAVITY.
Inventors
- 👤 Charles E Bentz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:53
CPC Classifications
G; G01; G01K; G01K11/00; G01K11/22
Claims Analysis
Total Claims: 0
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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) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |