US3227797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical control system
Assignee: Owens Corning
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Filing: 1963-07-10
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Granted: 1966-01-04
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Expires: 1983-07-10
Abstract
No abstract record available.
Inventors
- 👤 Vernon C Rees
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:42
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/22; G05D23/2236; G05D23/224
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A CONTROL SYSTEM FOR AN ELECTRICALLY HEATED DEVICE COMPRISING A FIRST TEMPERATURE SENSITIVE ELEMENT IN TEMPERATURE SENSING RELATION TO SAID DEVICE FOR PRODUCING A SIGNAL PROPORTIONAL TO THE TEMPERATURE OF SAID DEVICE, A HEAT ACCUMULATOR EXHIBITING TEMPERATURE-TIME CHARACTERISTICS SUBSTANTIALLY INVERSE TO THE TEMPERATURE-TIME CHARACTERISITCS OF SAID DEVICE, A SECOND TEMPERATURE SENSITIVE ELEMENT IN TEMPERATURE SENSING RELATION TO SAID HEAT ACCUMULATOR FOR PRODUCING A SIGNAL PROPORTIONAL TO THE TEMPERATURE OF SAID HEAT ACCUMULATOR, AND A HEATING CURRENT SUPPLY CIRCUIT CONNECTED TO SAID DEVICE INCLUDING CURRENT CONTROL MEANS RESPONSIVE TO THE SUM OF THE SIGNALS GENERATED BY SAID FIRST AND SECOND TEMPERATURE SENSITIVE ELEMENTS.
Claim 2
Dependent Claim
102 words
A CONTROL SYSTEM FOR AN ELECTRICALLY HEATED DEVICE COMPRISING A FIRST TEMPERATURE SENSITIVE ELEMENT IN TEMPERATURE SENSING RELATION TO SAID DEVICE FOR PRODUCING A SIGNAL PROPORTIONAL TO THE TEMPERATURE OF SAID DEVICE, A HEAT ACCUMULATOR EXHIBITING TEMPERATURE-TIME CHARACTERISTICS SUBSTANTIALLY INVERSE TO THE TEMPERATURE-TIME CHARACTERISITCS OF SAID DEVICE, A SECOND TEMPERATURE SENSITIVE ELEMENT IN TEMPERATURE SENSING RELATION TO SAID HEAT ACCUMULATOR FOR PRODUCING A SIGNAL PROPORTIONAL TO THE TEMPERATURE OF SAID HEAT ACCUMULATOR, AND A HEATING CURRENT SUPPLY CIRCUIT CONNECTED TO SAID DEVICE INCLUDING CURRENT CONTROL MEANS RESPONSIVE TO THE SUM OF THE SIGNALS GENERATED BY SAID FIRST AND SECOND TEMPERATURE SENSITIVE ELEMENTS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |