Patent US3688155A successfully refreshed from Google Patents.
US3688155A
Expired / Lapsed
US
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Reigniting spark gap device including a flow-through channel
Assignee: ABB Norden Holding AB
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Filing: 1971-06-17
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Granted: 1972-08-29
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Expires: 1991-06-17
Abstract
Abstract A reigniting spark gap for surge diverters with magnetic blowing has electrodes arranged on an insulating base. Each electrode has a spark gap part arranged in an extinguishing chamber and the spark gap parts of the electrodes diverge from an ignition point and the surfaces of the spark gap parts face each other and form running-out paths for the foot points of the arc arising between the electrodes. At least one of the two surfaces of the spark gap parts facing away from each other forms a return path for one foot point of an arc. The return path has an end point substantially opposite the ignition point. A channel connects the running-out path and the return path and forms a through-flow channel for ionized gas from the return path to the running-out path.
Inventors
- 👤 Bengt Johansson
- 👤 Erland Nilsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:58
CPC Classifications
H; H01; H01T; H01T1/00; H01T1/02; H01T1/04; H01J; H01J17/00; H01J2893/00; H01J2893/0059
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
160 words
Reigniting spark gap for surge diverters comprising a number of axially juxtaposed plates, each plate having two electrodes forming said spark gap, each plate having means forming an arc extinguishing chamber between two adjacent plates, each electrode having a spark gap part (6) arranged in said extinguishing chamber (2), the spark gap parts of the electrodes diverging from an ignition point (7) and the surfaces (8, 9) of the spark gap parts facing each other forming running-out paths for the foot points of the arc arising between the electrodes, at least one of the two surfaces (13, 14) of the spark gap parts facing away from each other forming a return path for one foot point of an arc, which return path has an end point substantially opposite the ignition point, and a channel (15, 16) connecting the running-out path and the return path and forming a through-flow channel for ionized gas from the return path to the running-out path.
Claim 2
Dependent Claim
160 words
Reigniting spark gap for surge diverters comprising a number of axially juxtaposed plates, each plate having two electrodes forming said spark gap, each plate having means forming an arc extinguishing chamber between two adjacent plates, each electrode having a spark gap part (6) arranged in said extinguishing chamber (2), the spark gap parts of the electrodes diverging from an ignition point (7) and the surfaces (8, 9) of the spark gap parts facing each other forming running-out paths for the foot points of the arc arising between the electrodes, at least one of the two surfaces (13, 14) of the spark gap parts facing away from each other forming a return path for one foot point of an arc, which return path has an end point substantially opposite the ignition point, and a channel (15, 16) connecting the running-out path and the return path and forming a through-flow channel for ionized gas from the return path to the running-out path.
Claim 3
Dependent Claim
26 words
Spark gap according to claim 1, in which the two electrodes are alike and each is provided with both a running-out path and a return path.
Claim 4
Dependent Claim
27 words
Spark gap according to claim 1, in which the electrodes are different and both the electrodes have running-out paths, whereas only one electrode has a return path.
Claim 5
Dependent Claim
29 words
Spark gap according to claim 1, in which the channel (15, 16) from the return path opens into the running-out path in the vicinity of the ignition point (7).
Claim 6
Dependent Claim
34 words
Spark gap according to claim 1, in which the channel (15, 16) from the return path opens into the running-out path at a reignition point (17) located at a distance from the ignition point.
Claim 7
Dependent Claim
16 words
Spark gap according to claim 1, in which the channel is formed in the electrode material.
Claim 8
Dependent Claim
16 words
Spark gap according to claim 1, in which the channel is formed in the insulating base.
Claim 9
Dependent Claim
46 words
Spark gap according to claim 1, in which the channel has one end at the end point and it is limited partly by the insulating base and partly by the electrode material, the electrode material providing a running-out path for the foot point of the arc.
References Cited (Backward Citations)
US2614232A
Cited
US3354345A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |