US3166901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detector for alkali-metal vapors
Assignee: RTX Corp
•
Filing: 1962-02-13
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Granted: 1965-01-26
•
Expires: 1982-02-13
Abstract
No abstract record available.
Inventors
- 👤 Bliss Philip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:34
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/02; G01N25/04; G01N25/06; G01M; G01M3/00; G01M3/02; G01M3/04; G01M3/042; G01M3/045
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
99 words
A DEVICE FOR DETECTING THE PRESENCE OF ALKALI-METAL FLUIDS COMPRISING A PLATINUM WIRE, MEANS FOR NORMALLY HEATING SAID WIRE TO A TEMPERATURE BELOW THE MELTING POINT OF PLATINUM, MEANS FOR FORMING A PLATINUM-SILICON ALLOY OF SAID PLATINUM WIRE IN THE PRESENCE OF AN ALKALI METAL INCLUDING A SILICEOUS MATERIAL MAINTAINED IN CONTACT WITH SAID WIRE, SAID ALLOY HAVING A MELTING POINT BELOW THAT TEMPERATURE TO WHICH SAID WIRE IS NORMALLY HEATED, SAID SILICEOUS MATERIAL CHARACTERIZED BY HAVING SILICON LIBERATED BY THE REACTION THEREWITH OF ALKALI METALS AND THEIR VAPORS, AND INDICATING MEANS RESPONSIVE TO THE MELTING OF SAID WIRE.
Claim 2
Independent Claim
99 words
A DEVICE FOR DETECTING THE PRESENCE OF ALKALI-METAL FLUIDS COMPRISING A PLATINUM WIRE, MEANS FOR NORMALLY HEATING SAID WIRE TO A TEMPERATURE BELOW THE MELTING POINT OF PLATINUM, MEANS FOR FORMING A PLATINUM-SILICON ALLOY OF SAID PLATINUM WIRE IN THE PRESENCE OF AN ALKALI METAL INCLUDING A SILICEOUS MATERIAL MAINTAINED IN CONTACT WITH SAID WIRE, SAID ALLOY HAVING A MELTING POINT BELOW THAT TEMPERATURE TO WHICH SAID WIRE IS NORMALLY HEATED, SAID SILICEOUS MATERIAL CHARACTERIZED BY HAVING SILICON LIBERATED BY THE REACTION THEREWITH OF ALKALI METALS AND THEIR VAPORS, AND INDICATING MEANS RESPONSIVE TO THE MELTING OF SAID WIRE.
Claim 3
Dependent Claim
128 words
IN A GAS-TURBINE ENGINE HAVING A RADIATOR FOR THE CIRCULATION OF AN ALKALI META, A DETECTOR FOR THE PRESENCE OF ALKALI METALS OR THEIR VAPORS LOCATED DOWNSTREAM OF THE AIR PASSING THROUGH SAID RADIATOR, SAID DETECTOR INCLUDING A PLATINUM WIRE SUPPORTED IN THE HOT GASES DISCHARGED FROM SAID ENGINE, SAID DISCHARGE GASES HAVING A TEMPERATURE BELOW THE MELTING POINT OF SAID WIRE, MEANS FOR FORMING A PLATINUM-SILICON ALLOY OF SAID WIRE IN THE PRESENCE OF AN ALKALI METAL INCLUDING A SILICEOUS MATERIAL ADJACENT SAID WIRE CHARACTERIZED BY HAVING SILICON LIBERATED BY THE REACTION THEREWITH OF ALAKLI METALS AND THEIR VAPORS, SAID ALLOY HAVING A MELTING POINT BELOW THE TEMPERATURE OF SAID GASES, AND MEANS RESPONSIVE TO THE MELTING OF SAID WIRE FOR INDICATING A LEAK IN SAID RADIATOR.
Claim 4
Dependent Claim
128 words
IN A GAS-TURBINE ENGINE HAVING A RADIATOR FOR THE CIRCULATION OF AN ALKALI META, A DETECTOR FOR THE PRESENCE OF ALKALI METALS OR THEIR VAPORS LOCATED DOWNSTREAM OF THE AIR PASSING THROUGH SAID RADIATOR, SAID DETECTOR INCLUDING A PLATINUM WIRE SUPPORTED IN THE HOT GASES DISCHARGED FROM SAID ENGINE, SAID DISCHARGE GASES HAVING A TEMPERATURE BELOW THE MELTING POINT OF SAID WIRE, MEANS FOR FORMING A PLATINUM-SILICON ALLOY OF SAID WIRE IN THE PRESENCE OF AN ALKALI METAL INCLUDING A SILICEOUS MATERIAL ADJACENT SAID WIRE CHARACTERIZED BY HAVING SILICON LIBERATED BY THE REACTION THEREWITH OF ALAKLI METALS AND THEIR VAPORS, SAID ALLOY HAVING A MELTING POINT BELOW THE TEMPERATURE OF SAID GASES, AND MEANS RESPONSIVE TO THE MELTING OF SAID WIRE FOR INDICATING A LEAK IN SAID RADIATOR.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-01-26 | 1968-07-27 | 1969-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-26 | 1972-07-27 | 1973-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-26 | 1976-07-27 | 1977-01-26 | $7700.00 | Window Closed / Lapsed |