US3580744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Immersion thermocouple for atmospheric and vacuum environments
Assignee: United States Department of the Air Force
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Filing: 1969-02-04
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Granted: 1971-05-25
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Expires: 1989-02-04
Abstract
Abstract A THERMOCOUPLE ASSEMBLY INCLUDING A PROTECTION TUBE MADE OF A TANTALUM ALLOY. THE PROTECTION TUBE IS OF A LENGTH SUFFICIENT TO ENCOMPASS THE THERMOCOUPLE WIRES AND IS CONCENTRICALLY POSITIONS INSIDE OF AN OUTER TUBE MADE OF QUARTZ. THUS, THE PROTECTION TUBE ACTS AS A BARRIER AND SHIELDS THE THERMOCOUPLE WIRES FROM THE HIGHLY CORROSIVE GASES CAUSED BY METALS ACTING ON THE QUARTZ OUTER TUBE.
Inventors
- 👤 Shingo Inouye
- 👤 George Saul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:19
CPC Classifications
G; G01; G01K; G01K1/00; G01K1/08; G01K1/12; F; F27; F27D; F27D21/00; F27D21/0014; G01K1/10; G01K7/00; G01K7/02
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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |