US3369401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature-gradient-insensitive resistance-type liquid metal level detector
Assignee: United States Atomic Energy Commission
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Filing: 1966-08-19
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Granted: 1968-02-20
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Expires: 1986-08-19
Abstract
No abstract record available.
Inventors
- 👤 Norman H Briggs
- 👤 Charles M Burton
- 👤 Glenn W Greene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:42
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/22; G01F23/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A DEVICE FOR CONTINUOUSLY MEASURING THE LEVEL OF LIQUID METAL IN A VESSEL COMPRISING A VESSEL FOR RECEIVING A LIQUID METAL, A PAIR OF CLOSELY SAPCED PORBES DISPOSED WITHIN THE VESSEL AND EXTENDING UPWARDLY FROM THE BOTTOM THEREOF TO A PREDETERMINED HEIGHT ABOVE THE BOTTOM, EACH SAID PROBE INCLUDING ON OUTER SHEEL AND A PLURALITY OF CONDUCTORS POSITIONED WITHIN THE SHELL AND ELECTRICALLY JOINED TO THE UPPER EXTREMITY OF THE SHEEL, THE OUTER SHEELS OF THE PAIR OF PROBES BEING COMPOSED OF THE SAME TYPE OF RESISTIVE MATERIAL, A SOURCE OF POTENTIAL COUPLED TO ONE OF THE CONDUCTORS OF EACH OF SAID PROBES, AND SIGNAL RESPONSIVE MEANS COUPLED TO ANOTHER ONE OF SAID CONDUCTORS OF EACH OF SAID PROBES WHEREBY THERMALLY CREATED SIGNALS GENERATED IN THE DEVICE ARE INTERNALLY CANCELLED SO AS TO PROVIDE AN ACCURATE INDICATION OF LIQUID LEVEL.
Claim 2
Independent Claim
140 words
A DEVICE FOR CONTINUOUSLY MEASURING THE LEVEL OF LIQUID METAL IN A VESSEL COMPRISING A VESSEL FOR RECEIVING A LIQUID METAL, A PAIR OF CLOSELY SAPCED PORBES DISPOSED WITHIN THE VESSEL AND EXTENDING UPWARDLY FROM THE BOTTOM THEREOF TO A PREDETERMINED HEIGHT ABOVE THE BOTTOM, EACH SAID PROBE INCLUDING ON OUTER SHEEL AND A PLURALITY OF CONDUCTORS POSITIONED WITHIN THE SHELL AND ELECTRICALLY JOINED TO THE UPPER EXTREMITY OF THE SHEEL, THE OUTER SHEELS OF THE PAIR OF PROBES BEING COMPOSED OF THE SAME TYPE OF RESISTIVE MATERIAL, A SOURCE OF POTENTIAL COUPLED TO ONE OF THE CONDUCTORS OF EACH OF SAID PROBES, AND SIGNAL RESPONSIVE MEANS COUPLED TO ANOTHER ONE OF SAID CONDUCTORS OF EACH OF SAID PROBES WHEREBY THERMALLY CREATED SIGNALS GENERATED IN THE DEVICE ARE INTERNALLY CANCELLED SO AS TO PROVIDE AN ACCURATE INDICATION OF LIQUID LEVEL.
References Cited (Backward Citations)
US3183715A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |