US3243684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device in high voltage converter installations intended to reduce disturbances in telecommunication systems
Assignee: ABB Norden Holding AB
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Filing: 1962-12-10
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Granted: 1966-03-29
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Expires: 1982-12-10
Abstract
No abstract record available.
Inventors
- 👤 Ekstrom Ake
- 👤 Faxo Lennart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:46
CPC Classifications
H; H02; H02M; H02M1/00; H02M1/14; H02M1/146
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
IN A HIGH VOLTAGE CONVERTER INSTALLATION COMPRISING A POLY-PHASE TRANSFORMER WITH A RECTIFIER WINDING CONNECTED TO CONTROLLED IONIC VALVES AND A LINE WINDING CONNECTED TO A POLY-PHASE LINE A DEVICE FOR REDUCING DISTURBANCES IN TELECOMMUNICATION SYSTEMS, SAID DEVICE COMPRISING A FIRST AND A SECOND GROUP OF IMPEDANCE ELEMENTS, AN AMPLIFER WITH TWO IMPUT TERMINALS AND TWO OUTPUT TERMINALS, EACH OF SAID GROUPS BEING BY-CONNECTED TO SAID POLY-PHASE LINE, THE NEUTRAL POINTS OF SAID FIRST GROUP BEING CONNECTED TO ONE OF SAID INPUT TERMINAL AND THE NEUTRAL POINT OF SAID SECOND GROUP BEING CONNECTED TO ONE OF SAID OUTPUT TERMINALS, AND THE REMAINING AMPLIFIER TERMINALS BEING CONNECTED TO EARTH.
Claim 2
Dependent Claim
108 words
IN A HIGH VOLTAGE CONVERTER INSTALLATION COMPRISING A POLY-PHASE TRANSFORMER WITH A RECTIFIER WINDING CONNECTED TO CONTROLLED IONIC VALVES AND A LINE WINDING CONNECTED TO A POLY-PHASE LINE A DEVICE FOR REDUCING DISTURBANCES IN TELECOMMUNICATION SYSTEMS, SAID DEVICE COMPRISING A FIRST AND A SECOND GROUP OF IMPEDANCE ELEMENTS, AN AMPLIFER WITH TWO IMPUT TERMINALS AND TWO OUTPUT TERMINALS, EACH OF SAID GROUPS BEING BY-CONNECTED TO SAID POLY-PHASE LINE, THE NEUTRAL POINTS OF SAID FIRST GROUP BEING CONNECTED TO ONE OF SAID INPUT TERMINAL AND THE NEUTRAL POINT OF SAID SECOND GROUP BEING CONNECTED TO ONE OF SAID OUTPUT TERMINALS, AND THE REMAINING AMPLIFIER TERMINALS BEING CONNECTED TO EARTH.
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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |