Patent US3242353A successfully refreshed from Google Patents.
US3242353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Damping arrangements for electrical generating and distribution systems
Assignee: Leeds and Northrup Co
•
Filing: 1962-02-02
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Granted: 1966-03-22
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Expires: 1982-02-02
Abstract
No abstract record available.
Inventors
- 👤 Edward S Bristol
- 👤 Jr Albert J Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:14
CPC Classifications
H; H02; H02J; H02J3/00; H02J3/38; H02J3/46; H02J3/466
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
IN A SYSTEM INCLUDING ALTERNATORS FOR GENERATING A.C. POWER DISTRIBUTED OVER POWER LINES AT LINE VOLTAGE TO ELECTRICAL LOADS, AN ARRANGEMENT FOR AUGMENTING THE DAMPING OF SAID SYSTEM COMPRISING A FREQUENCY-RESPONSIVE NETWORK COUPLED TO ONE OF SAID LINES AND INCLUDING IMPEDANCE MEANS PRESET FOR BALANCE OF SAID NETWORK AT NORMAL FREQUENCY AND EFFECTIVE TO PRODUCE A SIGNAL IN SENSE AND MAGNITUDE REPRESENTATIVE OF AN EXISTING DEVIATION FROM NORMAL FREQUENCY, A VOLTAGE-RESPONSIVE NETWORK COUPLED TO ONE OF SAID LINES AND INCLUDING IMPEDANCE MEANS PRESET FOR BALANCE OF SAID NETWORK AT NORMAL LINE VOLTAGE AND EFFECTIVE TO PRODUCE A SIGNAL IN SENSE AND MAGNITUDE REPRESENTATIVE OF AN EXISTING DEVIATION FROM NORMAL LINE VOLTAGE, AND MEANS RESPONSIVE TO THE ALGEBRAIC DIFFERENCE OF SAID SIGNALS FOR VARYING THE LINE VOLTAGE IN SENSE TO REDUCE SAID DIFFERENCE TO ZERO.
Claim 2
Dependent Claim
134 words
IN A SYSTEM INCLUDING ALTERNATORS FOR GENERATING A.C. POWER DISTRIBUTED OVER POWER LINES AT LINE VOLTAGE TO ELECTRICAL LOADS, AN ARRANGEMENT FOR AUGMENTING THE DAMPING OF SAID SYSTEM COMPRISING A FREQUENCY-RESPONSIVE NETWORK COUPLED TO ONE OF SAID LINES AND INCLUDING IMPEDANCE MEANS PRESET FOR BALANCE OF SAID NETWORK AT NORMAL FREQUENCY AND EFFECTIVE TO PRODUCE A SIGNAL IN SENSE AND MAGNITUDE REPRESENTATIVE OF AN EXISTING DEVIATION FROM NORMAL FREQUENCY, A VOLTAGE-RESPONSIVE NETWORK COUPLED TO ONE OF SAID LINES AND INCLUDING IMPEDANCE MEANS PRESET FOR BALANCE OF SAID NETWORK AT NORMAL LINE VOLTAGE AND EFFECTIVE TO PRODUCE A SIGNAL IN SENSE AND MAGNITUDE REPRESENTATIVE OF AN EXISTING DEVIATION FROM NORMAL LINE VOLTAGE, AND MEANS RESPONSIVE TO THE ALGEBRAIC DIFFERENCE OF SAID SIGNALS FOR VARYING THE LINE VOLTAGE IN SENSE TO REDUCE SAID DIFFERENCE TO ZERO.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |