US3382409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overcurrent-and overvoltage-protection arrangement
Assignee: Telefonaktiebolaget LM Ericsson AB
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Filing: 1966-05-11
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Granted: 1968-05-07
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Expires: 1986-05-11
Abstract
No abstract record available.
Inventors
- 👤 Assow Bengt
- 👤 Gustafsson Rolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:45
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/08; H02H3/10; H02H3/02; H02H3/021; H02H3/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
AN ARRANGEMENT WITH INPUT AND OUTPUT TERMINALS FOR PROTECTION AGAINST OVERCURRENTS AND OVERVOLTAGES AT A POWER REGULATOR, TO THE OUTPUT OF SAID REGULATOR A LOW PASS FILTER BEING CONNECTED, BETWEEN SAID FILTER AND SAID OUTPUT TERMINALS A RELAY COMPRISING A CURRENT WINDING AND A VOLTAGE WINDING BEING CONNECTED, SAID CURRENT WINDING BEING CONNECTED BETWEEN THE CONNECTION POINT BETWEEN THE COIL AND THE CAPACITOR OF SAID FILTER AND THE FIRST OF SAID OUTPUT TERMINALS, SAID VOLTAGE WINDING BEING CONNECTED IN SERIES WITH A ZENER DIODE BETWEEN SAID CONNECTION POINT AND THE SECOND OF SAID OUTPUT TERMINALS, TO SAID INPUT TERMINALS A CONTROLLED RECTIFIER IN SERIES WITH A RESISTANCE BEING CONNECTED, THE IGNITION ELECTRODE OF SAID CONTROLLED RECTIFIER IN SERIES WITH A MAKE CONTACT OF SAID RELAY BEING CONNECTED TO SAID SECOND OUTPUT TERMINAL, SAID RELAY HAVING AN OPERATING TIME LESS THAN THE TIME CONSTANT OF SAID FILTER.
Claim 2
Dependent Claim
146 words
AN ARRANGEMENT WITH INPUT AND OUTPUT TERMINALS FOR PROTECTION AGAINST OVERCURRENTS AND OVERVOLTAGES AT A POWER REGULATOR, TO THE OUTPUT OF SAID REGULATOR A LOW PASS FILTER BEING CONNECTED, BETWEEN SAID FILTER AND SAID OUTPUT TERMINALS A RELAY COMPRISING A CURRENT WINDING AND A VOLTAGE WINDING BEING CONNECTED, SAID CURRENT WINDING BEING CONNECTED BETWEEN THE CONNECTION POINT BETWEEN THE COIL AND THE CAPACITOR OF SAID FILTER AND THE FIRST OF SAID OUTPUT TERMINALS, SAID VOLTAGE WINDING BEING CONNECTED IN SERIES WITH A ZENER DIODE BETWEEN SAID CONNECTION POINT AND THE SECOND OF SAID OUTPUT TERMINALS, TO SAID INPUT TERMINALS A CONTROLLED RECTIFIER IN SERIES WITH A RESISTANCE BEING CONNECTED, THE IGNITION ELECTRODE OF SAID CONTROLLED RECTIFIER IN SERIES WITH A MAKE CONTACT OF SAID RELAY BEING CONNECTED TO SAID SECOND OUTPUT TERMINAL, SAID RELAY HAVING AN OPERATING TIME LESS THAN THE TIME CONSTANT OF SAID FILTER.
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) | 1971-05-07 | 1971-11-06 | 1972-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-07 | 1975-11-06 | 1976-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-07 | 1979-11-06 | 1980-05-07 | $7700.00 | Window Closed / Lapsed |