Patent US4493469A successfully refreshed from Google Patents.
US3710191A
Expired / Lapsed
US
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Overvoltage arrester with several electrodes
Assignee: Siemens AG
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Filing: 1971-10-15
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Granted: 1973-01-09
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Expires: 1991-10-15
Abstract
Abstract In order to avoid transverse voltages between associated conductor pairs without additional deflectors, particularly in the case of symmetrical wiring of telecommunication lines with overvoltage arresters, a gas discharge lightning arrester is proposed comprising two principal electrodes and one secondary electrode, as well as a ground electrode located symmetrically with respect to the principal electrodes, the ground electrode together with the two principal electrodes forming two principal discharge paths whose response for which is higher than that of a secondary discharge path defined by the principal electrodes.
Inventors
- 👤 G Peche
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:45
CPC Classifications
H; H01; H01T; H01T4/00; H01T4/10; H01T4/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
90 words
An overvoltage arrester having at least two discharge paths, comprising a ground electrode, at least two principal electrodes which with said ground electrode form said discharge paths, said ground electrode spaced from and symmetrically disposed with respect to said principal electrodes to define a first discharge path, said principal electrodes spaced apart and defining a second discharge path therebetween, said second discharge path having a response voltage that is less than that of said first discharge paths, and a gas-tight vessel connected to said electrodes and enclosing said discharge paths.
Claim 2
Dependent Claim
90 words
An overvoltage arrester having at least two discharge paths, comprising a ground electrode, at least two principal electrodes which with said ground electrode form said discharge paths, said ground electrode spaced from and symmetrically disposed with respect to said principal electrodes to define a first discharge path, said principal electrodes spaced apart and defining a second discharge path therebetween, said second discharge path having a response voltage that is less than that of said first discharge paths, and a gas-tight vessel connected to said electrodes and enclosing said discharge paths.
Claim 3
Dependent Claim
54 words
An overvoltage arrester according to claim 1, wherein said principal electrodes comprise a pair of cylindrical pins spaced from each other on a common axis and said second discharge path therebetween, and said ground electrode comprises a hollow cylinder concentric about and spaced from said cylindrical pins to define said first discharge paths therebetween.
Claim 4
Dependent Claim
26 words
An overvoltage arrester according to claim 2, wherein each of said pins includes a stepped down portion at its end which faces the other such pin.
Claim 5
Dependent Claim
34 words
An overvoltage arrester according to claim 2, wherein said housing includes a pair of end caps, and a pair of insulating hollow cylinders connecting respective ones of said end caps to said ground electrode.
Claim 6
Dependent Claim
56 words
An overvoltage arrester according to claim 1, wherein said principal electrodes comprise a pair of parallel extending juxtaposed elongate members, and said ground electrode comprises a pin disposed between said pair of elongate members defining therewith said first discharge paths, portions of said members extending toward and parallel one another in the centers of said members.
Claim 7
Dependent Claim
36 words
An overvoltage arrester according to claim 5, wherein said housing includes insulating material at least at its opposite ends, and said ground electrode and said principal electrodes extend through said insulating material through the respective ends.
Claim 8
Dependent Claim
29 words
An overvoltage arrester according to claim 1, wherein said principal electrodes are disposed nearer each other than they are to said ground electrode to render the response voltage relationship.
Claim 9
Dependent Claim
23 words
An overvoltage arrester according to claim 1, comprising material having a high electron emission capability coating the facing portions of said principal electrodes.
Claim 10
Dependent Claim
95 words
An overvoltage arrester according to claim 1, wherein said principal electrodes comprise a pair of frusto-conical caps each including a central portion further cupped in the same direction as the cupping of the frusto-conical cups, said electrodes disposed with said central portions facing each other, said ground electrode comprises a metal disc having a central aperture concentric with and disposed about and of a greater diameter than said central portions, and a pair of hollow insulating cylinders connecting respective ones of said principal electrodes to said ground electrode in a gas-tight manner forming said housing.
Claim 11
Dependent Claim
34 words
An overvoltage arrester according to claim 1, comprising a telephone line having a pair of line conductors connected to respective ones of said principal electrodes, and said ground electrode connected to a reference potential.
References Cited (Backward Citations)
US3564473A
Cited
US3522570A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |