US3076338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulsed resistance thermometers
Assignee: ILLINOIS TESTING LABORATORIES
•
Filing: 1959-07-22
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Granted: 1963-02-05
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Expires: 1979-07-22
Abstract
No abstract record available.
Inventors
- 👤 Veikko K Peltola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:43
CPC Classifications
G; G01; G01K; G01K7/00; G01K7/16; G01K7/18; G01K7/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A HIGH ACCURACY TEMPERATURE MEASURING AND INDICATING SYSTEM COMPRISING THREE CONSTANT RESISTANCES AND A TEMPERATURE SENSITIVE RESISTANCE, ALL CONNECTED END TO END IN SERIES TO FORM A RESISTANCE BRIDGE HAVING TWO INPUT TERMINALS AND TWO OUTPUT TERMINALS, A SOURCE OF ENERGIZATION CONNECTED TO THE INPUT OF A BLOCKING OSCILLATOR FOR GENERATING AN ELECTRIC IMPULSE HAVING A PEAK WAVE OF PREDETERMINED AMPLITUDE, A CATHDOE FOLLOWER CIRCUIT INCLUDING A TRANSFORMER ENERGIZED FROM THE SAME SOURCE AND HAVING ITS GRID CONTROLLED BY CONNECTION TO SAID OSCILLATOR, SAID TRANSFORMER HAVING A SECONDARY ACTING AS AN OUTPUT CIRCUIT, A PAIR OF ZENER DIODES CONNECTED BACK TO BACK, ONE OF SAID DIODES HAVING A POSITIVE TEMPERATURE COEFFICIENT AND THE OTHER DIODE HAVING A NEGATIVE TEMPERATURE COEFFICIENT FOR MAINTAINING CONSTANT CHARACTER-
Claim 2
Dependent Claim
124 words
A HIGH ACCURACY TEMPERATURE MEASURING AND INDICATING SYSTEM COMPRISING THREE CONSTANT RESISTANCES AND A TEMPERATURE SENSITIVE RESISTANCE, ALL CONNECTED END TO END IN SERIES TO FORM A RESISTANCE BRIDGE HAVING TWO INPUT TERMINALS AND TWO OUTPUT TERMINALS, A SOURCE OF ENERGIZATION CONNECTED TO THE INPUT OF A BLOCKING OSCILLATOR FOR GENERATING AN ELECTRIC IMPULSE HAVING A PEAK WAVE OF PREDETERMINED AMPLITUDE, A CATHDOE FOLLOWER CIRCUIT INCLUDING A TRANSFORMER ENERGIZED FROM THE SAME SOURCE AND HAVING ITS GRID CONTROLLED BY CONNECTION TO SAID OSCILLATOR, SAID TRANSFORMER HAVING A SECONDARY ACTING AS AN OUTPUT CIRCUIT, A PAIR OF ZENER DIODES CONNECTED BACK TO BACK, ONE OF SAID DIODES HAVING A POSITIVE TEMPERATURE COEFFICIENT AND THE OTHER DIODE HAVING A NEGATIVE TEMPERATURE COEFFICIENT FOR MAINTAINING CONSTANT CHARACTER-
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |