US3079484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostat
Assignee: Individual
•
Filing: 1960-01-08
•
Granted: 1963-02-26
•
Expires: 1980-01-08
Abstract
No abstract record available.
Inventors
- 👤 Shockley William
- 👤 Goetzberger Adolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:06
CPC Classifications
H; H10; H10D; H10D99/00; G; G05; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/2033; G05D23/2034; H10D48/00; H10D48/387; Y; Y10; Y10S; Y10S257/00; Y10S257/914
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
142 words
A TEMPERATURE CONTROL SYSTEM COMPRISING A SEMICONDUCTIVE THERMOSTAT, SAID THERMOSTAT BEING A SWITCHING DEVICE OF THE TYPE HAVING TWO STATES OF OPERATION: A HIGH IMPEDANCE LOW CURRENT STATE AND A LOW IMPEDANCE HIGH CURRENT STATE, SAID DEVICE ADAPTED TO SWITCH FROM THE HIGH IMPEDANCE STATE TO THE LOW IMPEDANCE STATE AT A PREDETERMINED VOLTAGE, SAID PREDETERMINED VOLTAGE DECREASING WITH INCREASING TEMPERATURE, A HEATING ELEMENT CONNECTED IN SHUNT WITH SAID THERMOSTAT, A LIMITING RESISTOR AND A VOLTAGE SOURCE CONNECTED IN SERIES WITH THE SHUNT COMBINATION THE VOLTAGE OF SAID SOURCE BEING SELECTED AT THE SWITCHING VOLTAGE OF THE THERMOSTAT FOR A PREDETERMINED TEMPERATURE AND BEING OF THE TYPE WHICH IS PERIODICALLY LOWERED TO REDUCE CURRENT THROUGH THE THERMOSTAT BELOW THE HOLDING VALUE WHEREBY WHEN THE TEMPERATURE OF THE SWITCHING DEVICE REACHES A PREDETERMINED TEMPERATURE IT WILL DIRECT CURRENT AWAY FROM THE HEATING ELEMENT.
References Cited (Backward Citations)
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Cited
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Cited
US2846592A
Cited
US3001077A
Cited
US2944165A
Cited
US2947844A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |