Patent US3348100A successfully refreshed from Google Patents.
US3348100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sparkover control circuit for lightning arrester shunt gap unit
Assignee: General Electric Co
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Filing: 1965-03-22
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Granted: 1967-10-17
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Expires: 1985-03-22
Abstract
No abstract record available.
Inventors
- 👤 James S Kresge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:59
CPC Classifications
H; H01; H01T; H01T1/00; H01T1/02; H01T1/04; H01T4/00; H01T4/16; H01T4/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A VALVE RESISTOR SHUNTING CURRENT SWITCHING GAP UNIT FOR A LIGHTNING ARRESTER COMPRISING, IN COMBINATION, AT LEAST TWO MAIN SPARK GAPS, A MAGNETIC COIL, SAID MAIN GAPS AND COIL BEING SERIALLY CONNECTED WITH THE COIL IN THE MIDDLE, A SPARK GAP CONNECTED ACROSS SAID COIL, SAID SPARK GAPS ALL HAVING ABOUT THE SAME INDIVIDUAL SPARKOVER VOLTAGE, AND MEANS FOR SEQUENTIALLY SPARKING OVER SAID GAPS AT AN APPLIED VOLTAGE ACROSS THE SERIES CIRCUIT WHICH IS BETWEEN THE INDIVIDUAL SPARKOVER VOLTAGE OF SAID GAPS AND THE SUM OF THE SPARKOVER VOLTAGE OF ALL SAID GAPS, THE SEQUENCE BEING SUCH THAT ONE MAIN GAP SPARKS OVER BEFORE THE COIL SHUNTING GAP SPARKS OVER.
Claim 2
Dependent Claim
110 words
A VALVE RESISTOR SHUNTING CURRENT SWITCHING GAP UNIT FOR A LIGHTNING ARRESTER COMPRISING, IN COMBINATION, AT LEAST TWO MAIN SPARK GAPS, A MAGNETIC COIL, SAID MAIN GAPS AND COIL BEING SERIALLY CONNECTED WITH THE COIL IN THE MIDDLE, A SPARK GAP CONNECTED ACROSS SAID COIL, SAID SPARK GAPS ALL HAVING ABOUT THE SAME INDIVIDUAL SPARKOVER VOLTAGE, AND MEANS FOR SEQUENTIALLY SPARKING OVER SAID GAPS AT AN APPLIED VOLTAGE ACROSS THE SERIES CIRCUIT WHICH IS BETWEEN THE INDIVIDUAL SPARKOVER VOLTAGE OF SAID GAPS AND THE SUM OF THE SPARKOVER VOLTAGE OF ALL SAID GAPS, THE SEQUENCE BEING SUCH THAT ONE MAIN GAP SPARKS OVER BEFORE THE COIL SHUNTING GAP SPARKS OVER.
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) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |