US2842648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat sensitive electric cables
Assignee: Balfour Beatty PLC
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Filing: 1955-02-11
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Granted: 1958-07-08
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Expires: 1975-02-11
Abstract
No abstract record available.
Inventors
- 👤 Reynolds Edward Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:57
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/04; G; G08; G08B; G08B17/00; G08B17/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49069; Y10T29/49117; Y10T29/49123
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A TEMPERATURE RESPONSIVE ELECTRIC CABLE COMPRISING TWO WIRES TWISTED TOGETHER, A ANODIC LAYER FORMED ON THE SURFACE OF AT LEAST ONE OF SAID WIRES AND A STABLE INSULATING MATERIAL HAVING A NEGATIVE TEMPERATURE COEFFICIENT OF RESISTANCE PERMEATING THE ANODIC MATERIAL, SAID CONDUCTORS BEING SEPARATED BY SAID ANODIC MATERIAL.
Claim 2
Dependent Claim
48 words
A TEMPERATURE RESPONSIVE ELECTRIC CABLE COMPRISING TWO WIRES TWISTED TOGETHER, A ANODIC LAYER FORMED ON THE SURFACE OF AT LEAST ONE OF SAID WIRES AND A STABLE INSULATING MATERIAL HAVING A NEGATIVE TEMPERATURE COEFFICIENT OF RESISTANCE PERMEATING THE ANODIC MATERIAL, SAID CONDUCTORS BEING SEPARATED BY SAID ANODIC MATERIAL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-07 | 1962-01-06 | 1962-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-07 | 1966-01-06 | 1966-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-07 | 1970-01-06 | 1970-07-08 | $7700.00 | Window Closed / Lapsed |