US3202800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass fiber bushing temperature controller
Assignee: Electronic Control Systems Inc
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Filing: 1963-06-17
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Granted: 1965-08-24
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Expires: 1983-06-17
Abstract
No abstract record available.
Inventors
- 👤 Sr George E Phillips
- 👤 Paul E Straight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:52
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/22; G05D23/2236; G05D23/224
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
111 words
IN A CONTROL SYSTEM FOR ACCURATELY CONTROLLING THE TEMPERATURE OF A BUSHING, THE COMBINATION COMPRISING A MAGNETIC CONTROLLER CONSISTING OF A SINGLE MAGNETIC AMPLIFIER HAVING A SINGLE INPUT CONTROL WINDING AND CONNECTED TO CONTROL THE CURRENT TO SAID BUSHING, FEEDBACK MEANS CONSISTING OF R-C FEEDBACK NETWORKS CONNECTING THE OUTPUT OF SAID AMPLIFIER TO THE SINGLE INPUT WINDING, SAID FEEDBACK MEANS INCLUDING MEANS FOR GENERATING FEEDBACK TEMPERATURE CONTROLLING SIGNALS COMPOSED OF THE SUM OF PROPORTIONAL, RESET AND RATE SIGNALS WITH RESPECT TO SAID BUSHING, SILICON CONTROL RECTIFIERS CONNECTED IN A LOAD CIRCUIT CONTROLLABE BY SAID MAGNETIC CONTROLLER, AND A CIRCUIT FIRING SAID RECTIFIERS FROM SAID CONTROLLER THROUGH LOAD CIRCUIT TO THE CONTROLLER.
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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |