US3277459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conductivity-type ice detector
Assignee: Emerson Process Management Ltd
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Filing: 1963-11-19
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Granted: 1966-10-04
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Expires: 1983-11-19
Abstract
No abstract record available.
Inventors
- 👤 Frank D Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:20
CPC Classifications
B; B64; B64D; B64D15/00; B64D15/20; G; G08; G08B; G08B19/00; G08B19/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
A PROBE FOR UTILIZATION IN CONNECTION WITH AN ICE DETECTION SYSTEM, SAID PROBE COMPRISING A MANDREL OF INSULATING MATERIAL PROJECTING INTO THE AIR STREAM IN WHICH ICE IS TO BE DETECTED, HEATING MEANS FOR MAINTAINING THE TEMPERATURE OF SAID PROBE ABOVE THE FREEZING POINT OF WATER, CONTROL MEANS INCLUDING TEMPERATURE SENSOR MEANS MOUNTED ON SAID PROBE FOR CONTROLLING SAID HEATING MEANS, SAID TEMPERATURE SENSOR MEANS BEING MOUNTED ON THE EXTERIOR SURFACE OF SAID PROBE SO AS TO BE DIRECTLY EXPOSED TO SAID AIR STREAM, MEANS FOR DETECTING AND INDICATING THE PRESENCE OF WATER ON THE OUTER SURFACE OF SAID PROBE COMPRISING A PAIR OF WIRES HELICALLY WOUND ON SAID PROBE, EACH COIL OF WIRE OF SAID PAIR BEING SPACED FROM AN ADJACENT COIL OF THE OTHER WIRE A DISTANCE LESS THAN THE DIAMETER OF THE WIRE, AND ELECTRICAL CURRENT MEANS ENERGIZABLE IN RESPONSE TO AN INCREASE IN CONDUCTIVITY BETWEEN SAID WIRES CAUSED BY WATER ON SAID PROBE.
Claim 2
Dependent Claim
157 words
A PROBE FOR UTILIZATION IN CONNECTION WITH AN ICE DETECTION SYSTEM, SAID PROBE COMPRISING A MANDREL OF INSULATING MATERIAL PROJECTING INTO THE AIR STREAM IN WHICH ICE IS TO BE DETECTED, HEATING MEANS FOR MAINTAINING THE TEMPERATURE OF SAID PROBE ABOVE THE FREEZING POINT OF WATER, CONTROL MEANS INCLUDING TEMPERATURE SENSOR MEANS MOUNTED ON SAID PROBE FOR CONTROLLING SAID HEATING MEANS, SAID TEMPERATURE SENSOR MEANS BEING MOUNTED ON THE EXTERIOR SURFACE OF SAID PROBE SO AS TO BE DIRECTLY EXPOSED TO SAID AIR STREAM, MEANS FOR DETECTING AND INDICATING THE PRESENCE OF WATER ON THE OUTER SURFACE OF SAID PROBE COMPRISING A PAIR OF WIRES HELICALLY WOUND ON SAID PROBE, EACH COIL OF WIRE OF SAID PAIR BEING SPACED FROM AN ADJACENT COIL OF THE OTHER WIRE A DISTANCE LESS THAN THE DIAMETER OF THE WIRE, AND ELECTRICAL CURRENT MEANS ENERGIZABLE IN RESPONSE TO AN INCREASE IN CONDUCTIVITY BETWEEN SAID WIRES CAUSED BY WATER ON SAID PROBE.
References Cited (Backward Citations)
US2717957A
Cited
US2766619A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |