Patent US3307402A successfully refreshed from Google Patents.
US3307402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compensated tapped thermocouple system
Assignee: RTX Corp
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Filing: 1963-12-04
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Granted: 1967-03-07
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Expires: 1983-12-04
Abstract
No abstract record available.
Inventors
- 👤 Donald V Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:30
CPC Classifications
G; G01; G01K; G01K7/00; G01K7/02; G01K7/021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A THERMOCOUPLE SYSTEM INCLUDING IN COMBINATION, A HOT JUNCTION GENERATING A VOLTAGE REPRESENTING A TEMPERATURE TO BE MEASURED, A COLD JUNCTION GENERATING A VOLTAGE, A METER HAVING TERMINALS CONNECTING SAID METER IN A CIRCUIT WITH SAID JUNCTIONS, SAID METER COMPRISING A MOVEMENT FOR INDICATING SAID TEMPERATURE AND INTERNAL MEANS FOR COMPENSATING FOR THE EFFECT OF TEMPERATURE ON SAID COLD JUNCTION, AN OUTPUT CIRCUIT ALSO CONNECTED TO SAID TERMINALS, AN EXTERNAL AUXILIARY THERMOCOUPLE SYSTEM IN SAID OUTPUT CIRCUIT COMPRISING FIRST AUXILIARY THERMOCOUPLE MEANS FOR GENERATING A VOLTAGE FOR BUCKING THE EFFECT DUE TO TEMPERATURE VARIATIONS OF SAID COLD JUNCTION VOLTAGE AT SAID TERMINALS, SECOND THERMOCOUPLE MEANS CONNECTED TO SAID FIRST THERMOCOUPLE MEANS AND INCLUDING MEANS FOR COMPENSATING SAID SECOND THERMOCOUPLE MEANS FOR CHANGES IN TEMPERATURE FOR PROVIDING AN OUTPUT VOLTAGE IN SAID OUTPUT CIRCUIT REPRESENTING SAID TEMPERATURE TO BE MEASURED WITHOUT AFFECTING SAID METER.
Claim 2
Dependent Claim
143 words
A THERMOCOUPLE SYSTEM INCLUDING IN COMBINATION, A HOT JUNCTION GENERATING A VOLTAGE REPRESENTING A TEMPERATURE TO BE MEASURED, A COLD JUNCTION GENERATING A VOLTAGE, A METER HAVING TERMINALS CONNECTING SAID METER IN A CIRCUIT WITH SAID JUNCTIONS, SAID METER COMPRISING A MOVEMENT FOR INDICATING SAID TEMPERATURE AND INTERNAL MEANS FOR COMPENSATING FOR THE EFFECT OF TEMPERATURE ON SAID COLD JUNCTION, AN OUTPUT CIRCUIT ALSO CONNECTED TO SAID TERMINALS, AN EXTERNAL AUXILIARY THERMOCOUPLE SYSTEM IN SAID OUTPUT CIRCUIT COMPRISING FIRST AUXILIARY THERMOCOUPLE MEANS FOR GENERATING A VOLTAGE FOR BUCKING THE EFFECT DUE TO TEMPERATURE VARIATIONS OF SAID COLD JUNCTION VOLTAGE AT SAID TERMINALS, SECOND THERMOCOUPLE MEANS CONNECTED TO SAID FIRST THERMOCOUPLE MEANS AND INCLUDING MEANS FOR COMPENSATING SAID SECOND THERMOCOUPLE MEANS FOR CHANGES IN TEMPERATURE FOR PROVIDING AN OUTPUT VOLTAGE IN SAID OUTPUT CIRCUIT REPRESENTING SAID TEMPERATURE TO BE MEASURED WITHOUT AFFECTING SAID METER.
References Cited (Backward Citations)
US2871701A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |