US3836780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for spark discharge chamber employing segmented cathode
Assignee: Linde Sverige AB
•
Filing: 1972-01-17
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Granted: 1974-09-17
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Expires: 1992-01-17
Abstract
Abstract A spark discharge chamber for detailed study of gamma and beta radiation comprising a plane cathode, a lattice-shaped auxiliary electrode and an anode, said cathode being divided into at least two cathode sections which are electrically insulatable from one another.
Inventors
- 👤 L Amqvist
- 👤 F Timmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:03
CPC Classifications
H; H01; H01J; H01J47/00; H01J47/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
89 words
In a spark discharge chamber for a detailed study of nuclear radiation, such as beta or gamma radiation, comprising a planar cathode, a reticulate anode and a reticulate auxiliary electrode, the improvement wherein the cathode comprises a plurality of separate, mutually insulated sections and means are provided for connecting predetermined sections of the cathode to a potential source which is positive in relation to the auxiliary electrode and for connecting other sections of the cathode to a potential source which is not positive in relation to the auxiliary electrode.
Claim 2
Dependent Claim
89 words
In a spark discharge chamber for a detailed study of nuclear radiation, such as beta or gamma radiation, comprising a planar cathode, a reticulate anode and a reticulate auxiliary electrode, the improvement wherein the cathode comprises a plurality of separate, mutually insulated sections and means are provided for connecting predetermined sections of the cathode to a potential source which is positive in relation to the auxiliary electrode and for connecting other sections of the cathode to a potential source which is not positive in relation to the auxiliary electrode.
Claim 3
Dependent Claim
40 words
A spark discharge chamber according to claim 1 further comprising a further electrode located in the plane of the cathode and means for connecting said further electrode to a potential source which is positive in relation to the auxiliary electrode.
References Cited (Backward Citations)
US3622787A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |