US3153748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control apparatus
Assignee: Thermo Electric Co Inc
•
Filing: 1962-07-17
•
Granted: 1964-10-20
•
Expires: 1982-07-17
Abstract
No abstract record available.
Inventors
- 👤 Carlos B Metzadour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:23
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
131 words
CONTROL APPARATUS COMPRISING, (A) A PAIR OF SATURABLE CORE REACTORS HAVING SERIESCONNECTED ENERGIZING WINDINGS, BIASING WINDINGS AND CONTROL WINDINGS, (B) A TRANSFORMER HAVING A PRIMARY WINDING AND A CENTERTAPPED SECONDARY WINDING, (C) AN OUTPUT RESISTOR CONNECTED BETWEEN THE CENTER TAP OF SAID TRANSFORMER SECONDARY WINDING AND THE COMMON JUNCTION OF THE SAID ENERGIZING WINDINGS, (D) CIRCUIT ELEMENTS INCLUDING A PAIR OF RECTIFIERS CONNECTING AN END OF EACH ENERGIZING WINDING TO AN END OF SAID CENTER-TAPPED SECONDARY WINDING, (E) A SOURCE OF ALTERNATING ENERGIZING VOLTAGE, (F) CIRCUIT ELEMENTS APPLYING THE ENERGIZING VOLTAGE TO THE SAID TRANSFORMER PRIMARY WINDING, (G) A SOURCE OF D.C. VOLTAGE, (H) MEANS APPLYING A PREDETERMINED MAGNITUDE OF THE D.C. VOLTAGE ACROSS THE SAID BIASING WINDINGS, WHICH MAGNITUDE CORRESPONDS TO A PREDETERMINED STATE OF A CONDITION TO BE CONTROLLED,
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) | 1967-10-20 | 1968-04-20 | 1968-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-20 | 1972-04-20 | 1972-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-20 | 1976-04-20 | 1976-10-20 | $7700.00 | Window Closed / Lapsed |