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Patent US3017269A successfully refreshed from Google Patents.
US3017269A
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US
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Copper-nickel thermocouple elements with controlled voltage temperature characteristics
Assignee: Leeds and Northrup Co
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Filing: 1959-05-04
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Granted: 1962-01-16
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Expires: 1979-05-04
Abstract
No abstract record available.
Inventors
- 👤 Donald I Finch
- 👤 Korostoff Edward
- 👤 Daniel D Pollock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:40
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/01; H; H10; H10N; H10N10/00; H10N10/80; H10N10/85; H10N10/851; H10N10/854
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A CORROSION-RESISTANT THERMOCOUPLE ELEMENT HAVING AGAINST PLATINUM A STABLE VOLTAGE/TEMPERATURE CHARACTERISTIC WHOSE AVERAGE SLOPE IS -41.5 MICROVOLTS PER DEGREE CENTIGRADE WITHIN TOLERANCE LIMITS OF PLUS AND MINUS 1% AND WHICH CONSISTS OF AN ALLOY COMPOSED OF THE CONTROL ELEMENTS TITANIUM SILICON, TIN, IRON AND COBALT TOTALING NOT MORE THAN 5%, SAID TITANIUM, SILICON AND TIN BEING PRESENT IN AT LEAST MINIMUM AMOUNTS EFFECTIVE TI INCREASE CORROSION RESISTANCE, SAID IRON AND COBALT BEING PRESENT IN AT LEAST MINIMUM AMOUNTS EFFECTIVE TO DECREASE THE E.M.F. A PREDETERMINED EXTENT, AND THE REMAINDER ESSENTIALLY BEING A COPPER-NICKEL BASE HAVING A COPPER-NICKEL RATIO CLOSELY APPROXIMATING 60% COPPER, 40% NICKEL, SAID CONTROL ELEMENTS BEING ESSENTIALLY WHOOLY IN SOLID SOLUTION IN THE COPPER-NICKEL BASE.
Claim 2
Dependent Claim
117 words
A CORROSION-RESISTANT THERMOCOUPLE ELEMENT HAVING AGAINST PLATINUM A STABLE VOLTAGE/TEMPERATURE CHARACTERISTIC WHOSE AVERAGE SLOPE IS -41.5 MICROVOLTS PER DEGREE CENTIGRADE WITHIN TOLERANCE LIMITS OF PLUS AND MINUS 1% AND WHICH CONSISTS OF AN ALLOY COMPOSED OF THE CONTROL ELEMENTS TITANIUM SILICON, TIN, IRON AND COBALT TOTALING NOT MORE THAN 5%, SAID TITANIUM, SILICON AND TIN BEING PRESENT IN AT LEAST MINIMUM AMOUNTS EFFECTIVE TI INCREASE CORROSION RESISTANCE, SAID IRON AND COBALT BEING PRESENT IN AT LEAST MINIMUM AMOUNTS EFFECTIVE TO DECREASE THE E.M.F. A PREDETERMINED EXTENT, AND THE REMAINDER ESSENTIALLY BEING A COPPER-NICKEL BASE HAVING A COPPER-NICKEL RATIO CLOSELY APPROXIMATING 60% COPPER, 40% NICKEL, SAID CONTROL ELEMENTS BEING ESSENTIALLY WHOOLY IN SOLID SOLUTION IN THE COPPER-NICKEL BASE.
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) | 1965-01-15 | 1965-07-17 | 1966-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-15 | 1969-07-17 | 1970-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-15 | 1973-07-17 | 1974-01-16 | $7700.00 | Window Closed / Lapsed |