US3116398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostatic control system with thermal relay means
Assignee: General Electric Co
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Filing: 1962-02-26
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Granted: 1963-12-31
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Expires: 1982-02-26
Abstract
No abstract record available.
Inventors
- 👤 Stanley B Welch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:18
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/24; F; F24; F24C; F24C7/00; F24C7/08; F24C7/087; G05D23/1906; G05D23/1913; Y; Y10; Y10S; Y10S292/00; Y10S292/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
196 words
AN ELECTRICAL THERMOSTATIC CONTROL SYSTEM CONTROLLING THE TEMPERATURE OF A BODY PROVIDED WITH ELECTRIC HEATING MEANS ADAPTED TO BE CONNECTED WITH A RELATIVELY HIGH VOLTAGE SOURCE OF ELECTRICAL ENERGY SO AS TO HOLD SELECTED TEMPERATURES IN SUCH BODY WITHIN A NORMAL RANGE OF OPERATIONS AND TO ESTABLISH IN SAID BODY AN ELEVATED TEMPERATURE MATERIALLY ABOVE SAID NORMAL RANGE, COMPRISING A POWER RELAY CONNECTED TO CONTROL THE ENERGIZATION OF SAID HEATING MEANS FROM SAID HIGH VOLTAGE SOURCE, A RELATIVELY LOW VOLTAGE ELECTRICAL CIRCUIT, A VARIABLE RESISTANCE TEMPERATURE SENSER CONNECTED TO SAID LOW VOLTAGE CIRCUIT AND HAVING A HIGH TEMPERATURE COEFFICIENT OF RESISTANCE RESPONSIVE TO THE TEMPERATURE OF SAID BODY TO SUPPLY FROM SAID LOW VOLTAGE SOURCE A LOW VOLTAGE WHICH VARIES AS A FUNCTION OF THE TEMPERATURE CHANGES IN SAID BODY, A PULSING THERMAL VOLTAGE REGULATING RELAY HAVING AN OUTPUT VOLTAGE AND CONNECTED TO SAID TEMPERATURE SENSER TO BE CONTROLLED THEREBY SO THAT SAID OUTPUT VOLTAGE IS VARIED IN ACCORDANCE WITH VARIATIONS IN THE VOLTAGE SUPPLIED BY SAID SENSER, A FIRST RESPONDER RELAY CONNECTED TO BE OPERATED IN ACCORDANCE WITH SAID OUTPUT VOLTAGE OF SAID PULSING RELAY AND TO CONTROL THE OPERATION OF SAID POWER RELAY TO
Claim 2
Dependent Claim
196 words
AN ELECTRICAL THERMOSTATIC CONTROL SYSTEM CONTROLLING THE TEMPERATURE OF A BODY PROVIDED WITH ELECTRIC HEATING MEANS ADAPTED TO BE CONNECTED WITH A RELATIVELY HIGH VOLTAGE SOURCE OF ELECTRICAL ENERGY SO AS TO HOLD SELECTED TEMPERATURES IN SUCH BODY WITHIN A NORMAL RANGE OF OPERATIONS AND TO ESTABLISH IN SAID BODY AN ELEVATED TEMPERATURE MATERIALLY ABOVE SAID NORMAL RANGE, COMPRISING A POWER RELAY CONNECTED TO CONTROL THE ENERGIZATION OF SAID HEATING MEANS FROM SAID HIGH VOLTAGE SOURCE, A RELATIVELY LOW VOLTAGE ELECTRICAL CIRCUIT, A VARIABLE RESISTANCE TEMPERATURE SENSER CONNECTED TO SAID LOW VOLTAGE CIRCUIT AND HAVING A HIGH TEMPERATURE COEFFICIENT OF RESISTANCE RESPONSIVE TO THE TEMPERATURE OF SAID BODY TO SUPPLY FROM SAID LOW VOLTAGE SOURCE A LOW VOLTAGE WHICH VARIES AS A FUNCTION OF THE TEMPERATURE CHANGES IN SAID BODY, A PULSING THERMAL VOLTAGE REGULATING RELAY HAVING AN OUTPUT VOLTAGE AND CONNECTED TO SAID TEMPERATURE SENSER TO BE CONTROLLED THEREBY SO THAT SAID OUTPUT VOLTAGE IS VARIED IN ACCORDANCE WITH VARIATIONS IN THE VOLTAGE SUPPLIED BY SAID SENSER, A FIRST RESPONDER RELAY CONNECTED TO BE OPERATED IN ACCORDANCE WITH SAID OUTPUT VOLTAGE OF SAID PULSING RELAY AND TO CONTROL THE OPERATION OF SAID POWER RELAY TO
References Cited (Backward Citations)
US2236624A
Cited
US2962575A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-30 | 1967-07-01 | 1967-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-30 | 1971-07-01 | 1971-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-30 | 1975-07-01 | 1975-12-31 | $7700.00 | Window Closed / Lapsed |