US3114078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amplifier apparatus for measuring currents and/or voltages on high voltage transmission lines
Assignee: BBC Brown Boveri AG Germany
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Filing: 1959-08-28
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Granted: 1963-12-10
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Expires: 1979-08-28
Abstract
No abstract record available.
Inventors
- 👤 Waldvogel Paul
- 👤 Babler Justus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:12
CPC Classifications
H; H02; H02H; H02H1/00; H02H1/0007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
APPARATUS FOR MEASURING CURRENT FLOW IN A HIGH VOLTAGE POWER LINE COMPRISING A CURRENT TRANSFORMER COUPLED TO SAID LINE, SAID TRANSFORMER BEING OF THE MAGNETIC VOLTMETER TYPE, AMPLIFIER MEANS CONNECTED TO SAID TRANSFORMER, SAID AMPLIFIER MEANS HAVING A HIGH INPUT IMPEDANCE AND A GAIN CHARACTERISTIC WHICH IS CONSTANT FOR A LOWER RANGE OF INPUT CURRENT VALUES UP TO AT LEAST THE RATED VALUE OF LINE CURRENT AND THEREAFTER DECREASES LOGARITHMICALLY, AND SUPERVISORY RELAY MEANS CONNECTED TO THE OUTPUT OF SAID AMPLIFIER MEANS.
Claim 2
Dependent Claim
82 words
APPARATUS FOR MEASURING CURRENT FLOW IN A HIGH VOLTAGE POWER LINE COMPRISING A CURRENT TRANSFORMER COUPLED TO SAID LINE, SAID TRANSFORMER BEING OF THE MAGNETIC VOLTMETER TYPE, AMPLIFIER MEANS CONNECTED TO SAID TRANSFORMER, SAID AMPLIFIER MEANS HAVING A HIGH INPUT IMPEDANCE AND A GAIN CHARACTERISTIC WHICH IS CONSTANT FOR A LOWER RANGE OF INPUT CURRENT VALUES UP TO AT LEAST THE RATED VALUE OF LINE CURRENT AND THEREAFTER DECREASES LOGARITHMICALLY, AND SUPERVISORY RELAY MEANS CONNECTED TO THE OUTPUT OF SAID AMPLIFIER MEANS.
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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) | 1966-12-09 | 1967-06-10 | 1967-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-09 | 1971-06-10 | 1971-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-09 | 1975-06-10 | 1975-12-10 | $7700.00 | Window Closed / Lapsed |