US3082954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical temperature control system with feedback
Assignee: Individual
•
Filing: 1954-10-25
•
Granted: 1963-03-26
•
Expires: 1974-10-25
Abstract
No abstract record available.
Inventors
- 👤 Franklin F Offner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:27
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/22; G05D23/2236; G05D23/2237
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
IN A SYSTEM OF TEMPERATURE CONTROL, MEANS FOR PRODUCING AN ELECTRICAL SIGNAL REPRESENTATIVE OF THE DEVIATION IN TEMPERATURE TO BE CONTROLLED FROM THE TEMPERATURE DESIRED TO BE MAINTAINED, AMPLIFIER MEANS FOR AMPLIFYING SAID SIGNAL, CONTROL MEANS FOR A PARAMETER WHICH WILL VARY THE TEMPERATURE TO BE CONTROLLED, SAID CONTROL MEANS BEING CONTROLLED BY THE OUTPUT OF SAID AMPLIFIER MEANS, AND INTEGRAL NEGATIVE FEEDBACK MEANS TO REDUCE THE GAIN OF SAID AMPLIFIER MEANS, SAID FEEDBACK MEANS INCLUDING RESISTIVE MEANS TRANSMITTING A D.C. SIGNAL FROM THE OUTPUT TO THE INPUT OF SAID AMPLIFIER MEANS AND CAPACITIVE MEANS BYPASSING ALTERNATING CURRENT COMPONENTS OF THE FEEDBACK SIGNAL FOR EFFECTING A TIME DELAY IN THE APPLICATION OF THE SIGNAL FED BACK THROUGH SAID FEEDBACK MEANS.
Claim 2
Dependent Claim
120 words
IN A SYSTEM OF TEMPERATURE CONTROL, MEANS FOR PRODUCING AN ELECTRICAL SIGNAL REPRESENTATIVE OF THE DEVIATION IN TEMPERATURE TO BE CONTROLLED FROM THE TEMPERATURE DESIRED TO BE MAINTAINED, AMPLIFIER MEANS FOR AMPLIFYING SAID SIGNAL, CONTROL MEANS FOR A PARAMETER WHICH WILL VARY THE TEMPERATURE TO BE CONTROLLED, SAID CONTROL MEANS BEING CONTROLLED BY THE OUTPUT OF SAID AMPLIFIER MEANS, AND INTEGRAL NEGATIVE FEEDBACK MEANS TO REDUCE THE GAIN OF SAID AMPLIFIER MEANS, SAID FEEDBACK MEANS INCLUDING RESISTIVE MEANS TRANSMITTING A D.C. SIGNAL FROM THE OUTPUT TO THE INPUT OF SAID AMPLIFIER MEANS AND CAPACITIVE MEANS BYPASSING ALTERNATING CURRENT COMPONENTS OF THE FEEDBACK SIGNAL FOR EFFECTING A TIME DELAY IN THE APPLICATION OF THE SIGNAL FED BACK THROUGH SAID FEEDBACK MEANS.
References Cited (Backward Citations)
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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) | 1966-03-25 | 1966-09-24 | 1967-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-25 | 1970-09-24 | 1971-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-25 | 1974-09-24 | 1975-03-26 | $7700.00 | Window Closed / Lapsed |