US3114082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric control circuits using thermistors
Assignee: K H HUPPERT CO
•
Filing: 1961-01-12
•
Granted: 1963-12-10
•
Expires: 1981-01-12
Abstract
No abstract record available.
Inventors
- 👤 Erwin K Weise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:12
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/22; G05D23/1919
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
IN AN ELECTRICAL CONTROL CIRCUIT, A THERMISTOR HAVING A HIGH TEMPERATURE COEFFICIENT OF RESISTANCE, CONTROL CIRCUIT MEANS CONNECTED TO SAID THERMISTOR AND OPERATING RESPONSIVE TO A CHANGE IN THE RESISTANCE THEREOF OVER THE PORTIONS OF THE VOLTAGE-CURRENT CHARACTERISTICS OF SAID THERMISTOR FOR DIFFERENT TEMPERATURES THEREOF WHEREIN THE VALUE OF ONE OF SAID VOLTAGE AND CURRENT SUBSTANTIALLY GREATLY CHANGES FOR RELATIVELY SMALL CHANGES IN THE OTHER, AND A MEMBER FOR MECHANICALLY CONTACTING SAID THERMISTOR TO TRANSFER HEAT WITH SAID THERMISTOR TO CHANGE THE RESISTANCE THEREOF OVER SAID PORTIONS OF SAID VOLTAGE-CURRENT CHARACTERISTICS.
Claim 2
Dependent Claim
91 words
IN AN ELECTRICAL CONTROL CIRCUIT, A THERMISTOR HAVING A HIGH TEMPERATURE COEFFICIENT OF RESISTANCE, CONTROL CIRCUIT MEANS CONNECTED TO SAID THERMISTOR AND OPERATING RESPONSIVE TO A CHANGE IN THE RESISTANCE THEREOF OVER THE PORTIONS OF THE VOLTAGE-CURRENT CHARACTERISTICS OF SAID THERMISTOR FOR DIFFERENT TEMPERATURES THEREOF WHEREIN THE VALUE OF ONE OF SAID VOLTAGE AND CURRENT SUBSTANTIALLY GREATLY CHANGES FOR RELATIVELY SMALL CHANGES IN THE OTHER, AND A MEMBER FOR MECHANICALLY CONTACTING SAID THERMISTOR TO TRANSFER HEAT WITH SAID THERMISTOR TO CHANGE THE RESISTANCE THEREOF OVER SAID PORTIONS OF SAID VOLTAGE-CURRENT CHARACTERISTICS.
References Cited (Backward Citations)
US1703803A
Cited
US1944721A
Cited
US2273600A
Cited
DE730547C
Cited
US2482820A
Cited
US2536806A
Cited
US2947875A
Cited
US2928037A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-09 | 1967-06-10 | 1967-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-09 | 1971-06-10 | 1971-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-09 | 1975-06-10 | 1975-12-10 | $7700.00 | Window Closed / Lapsed |