Patent US3773993A successfully refreshed from Google Patents.
US3773993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arc electrode, especially for vacuum switches
Assignee: Individual
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Filing: 1972-03-07
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Granted: 1973-11-20
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Expires: 1992-03-07
Abstract
Abstract An arc electrode, especially for vacuum switches, comprising two oppositely situated electrodes for taking-up the base points of the arcs and formed of a number of plates. The narrow surfaces of the plates are disposed to confront the oppositely situated electrodes. Gaps or spaces are maintained free between the individual plates, the width of such gaps being at least equal to the thickness of a plate.
Inventors
- 👤 J Amsler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:50
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/60; H01H33/66; H01H33/664; H01H33/6643; H01H33/6646
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
82 words
An arc electrode arrangement particularly for vacuum switches, comprising two oppositely located electrode rods, arcing means for each electrode rod and having a plurality of plates separated from another by gaps therebetween, said plates extending substantially parallel to the axis of the respective electrode rod, said arcing means having an arcing face defined by edges of the plates to take up the base points of the arc, the width of said gaps being at least equal to the thickness of a plate.
Claim 2
Dependent Claim
82 words
An arc electrode arrangement particularly for vacuum switches, comprising two oppositely located electrode rods, arcing means for each electrode rod and having a plurality of plates separated from another by gaps therebetween, said plates extending substantially parallel to the axis of the respective electrode rod, said arcing means having an arcing face defined by edges of the plates to take up the base points of the arc, the width of said gaps being at least equal to the thickness of a plate.
Claim 3
Dependent Claim
25 words
The arc electrode as defined in claim 1, wherein the plates are rotationally symmetrically arranged about an axis common to both oppositely situated electrode rods.
Claim 4
Dependent Claim
24 words
The arc electrode as defined in claim 2, wherein the plates are radially arranged about an axis common to both oppositely situated electrode rods.
Claim 5
Dependent Claim
28 words
The arc electrode as defined in claim 1, wherein the plates are flexed and parallelly arranged with regard to an axis common to both oppositely situated electrode rods.
Claim 6
Dependent Claim
17 words
The arc electrode as defined in claim 1, wherein the plates are arranged in substantially parallel planes.
Claim 7
Dependent Claim
39 words
The arc electrode as defined in claim 1, wherein the sum of the length of the edges of the plates at the electrode surfaces confronting the oppositely located electrode rods amounts to at least 3 cm. per square centimeter.
Claim 8
Dependent Claim
30 words
The arc electrode as defined in claim 1, wherein the dimensions of the plates below said plate edges confronting the oppositely located electrode rods amounts to at least one centimeter.
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) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |