US3263117A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spark gap device having an intermediate electrode forming two series spark gaps
Assignee: ABB Norden Holding AB
•
Filing: 1961-06-14
•
Granted: 1966-07-26
•
Expires: 1981-06-14
Abstract
No abstract record available.
Inventors
- 👤 Nilsson Erland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:47
CPC Classifications
H; H01; H01T; H01T4/00; H01T4/16; H01T4/18; H01J; H01J17/00; H01T1/00; H01T1/02; H01T1/04; H01T1/08; H01J2893/00; H01J2893/0059
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
SPARK GAP DEVICE COMPRISING AT LEAST TWO SUBSTANTIALLY PARALLEL DISCS OF ARC RESISTANT INSULATING MATERIAL, EACH TWO ADJACENT DISCS FORMING BETWEEN THEM A CLOSED ARC CHAMBER, METALLIC ELECTRODES ARRANGED IN SAID ARC CHAMBER, SAID ARC CHAMBER COMPRISING A SPACIOUS IGNITION CHAMBER PART AND A NARROW EXTINCTION CHAMBER PART, ELECTROMAGNETIC MEANS FOR GENERATING A MAGNETIC FIELD DIRECTED PERPENDICULAR TO SAID PARALLEL DISCS FOR LENGTHENING AND MOVING EACH ARC IN THE SPARK GAP DEVICE FROM THE IGNITION CHAMBER TO THE EXTINCTION CHAMBER, EACH ARC CHAMBER CONTAINING TWO OUTER ELECTRODES AND AT LEAST ONE INTERMEDIATE ELECTRODE ARRANGED BETWEEN SAID OUTER ELECTRODES, SAID ELECTRODES FORMING AT LEAST TWO SERIES CONNECTED SPARK GAPS BETWEEN THEM, SAID SPARK
Claim 2
Dependent Claim
112 words
SPARK GAP DEVICE COMPRISING AT LEAST TWO SUBSTANTIALLY PARALLEL DISCS OF ARC RESISTANT INSULATING MATERIAL, EACH TWO ADJACENT DISCS FORMING BETWEEN THEM A CLOSED ARC CHAMBER, METALLIC ELECTRODES ARRANGED IN SAID ARC CHAMBER, SAID ARC CHAMBER COMPRISING A SPACIOUS IGNITION CHAMBER PART AND A NARROW EXTINCTION CHAMBER PART, ELECTROMAGNETIC MEANS FOR GENERATING A MAGNETIC FIELD DIRECTED PERPENDICULAR TO SAID PARALLEL DISCS FOR LENGTHENING AND MOVING EACH ARC IN THE SPARK GAP DEVICE FROM THE IGNITION CHAMBER TO THE EXTINCTION CHAMBER, EACH ARC CHAMBER CONTAINING TWO OUTER ELECTRODES AND AT LEAST ONE INTERMEDIATE ELECTRODE ARRANGED BETWEEN SAID OUTER ELECTRODES, SAID ELECTRODES FORMING AT LEAST TWO SERIES CONNECTED SPARK GAPS BETWEEN THEM, SAID SPARK
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) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |