Patent US3225289A successfully refreshed from Google Patents.
US3225289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
M.c.t. transmitter
Assignee: Elsag Bailey Inc
•
Filing: 1962-09-14
•
Granted: 1965-12-21
•
Expires: 1982-09-14
Abstract
No abstract record available.
Inventors
- 👤 Harold H Koppel
- 👤 Philip I Wajs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:14
CPC Classifications
G; G05; G05B; G05B24/00; G05B24/02; G05D; G05D3/00; G05D3/12; G05D3/14
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
181 words
IN A TRANSMITTING DEVICE THE COMBINATION COMPRISING; A TRANSFORMER HAVING A MOVABLE CORE ADAPTED TO BE DISPLACED RELATIVE TO A CENTER POSITION, A PRIMARY WINDING COUPLED TO A SOURCE OF ALTERNATING VOLTAGE, A PAIR OF SECONDARY SIGNAL WINDINGS POSITIONED ON OPPOSITE SIDES OF SAID CENTER POSITION, A PAIR OF SECONDARY SUPPLY WINDINGS POSITIONED ON OPPOSITE SIDES OF SAID CENTER POSITION AND CONNECTED IN A SERIES ADDING CIRCUIT, SAID CORE BEING OPERATIVE TO ESTABLISH A VARIABLE INDUCTIVE COUPLING BETWEEN SAID PRIMARY WINDING AND EACH OF SAID SECONDARY WINDINGS TO ESTABLISH AN ALTERNATING SIGNAL ACROSS EACH OF SAID SECONDARY SIGNAL WINDINGS OF MAGNITUDE DEPENDENT UPON POSITION OF SAID CORE AND A POTENTIAL ACROSS SAID SERIES CIRCUIT OF CONSTANT MAGNITUDE IRRESPECTIVE OF THE POSITION OF SAID CORE; A PAIR OF FULL-WAVE RECTIFIER CIRCUITS COUPLED TO SAID SECONDARY SIGNAL WINDINGS RESPECTIVELY FOR PRODUCING FULL-WAVE RECTIFIED SIGNALS PROPORTIONAL TO THE POSITION OF SAID CORE RELATIVE TO SAID SIGNAL WINDINGS RESPECTIVELY; AND SECOND MEANS CONNECTING THE ENDS OF SAID SERIES ADDING CIRCUIT TO SAID RECTIFIER CIRCUITS RESPECTIVELY TO ESTABLISH A SELF COMPENSATED POWER SUPPLY FOR SAID TRANSMITTER.
References Cited (Backward Citations)
US2434547A
Cited
US2478363A
Cited
US2631272A
Cited
US2827604A
Cited
US3002144A
Cited
US3045174A
Cited
US3100889A
Cited
US3046535A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |