US3702409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Neutron counter filled with boron trifluoride gas
Assignee: United Kingdom Atomic Energy Authority
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Filing: 1970-06-29
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Granted: 1972-11-07
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Expires: 1990-06-29
Abstract
Abstract Failure of neutron detecting chambers can be avoided if the results of fault analysis are properly analyzed. In this invention the analysis leads to a redisposition, redesign and reorientation of ceramic components to avoid or delay their deterioration during use of the chamber.
Inventors
- 👤 Anthony Goodings
- 👤 John Walgate Leake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:03
CPC Classifications
H; H01; H01J; H01J47/00; H01J47/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
54 words
A neutron sensitive detector as claimed in claim 1 in Which the elongated electrode is supported within the chamber at its end remote from the ceramic to metal seal by an annular ceramic member extending from the chamber wall, the member having grooves therein, each said groove having a width greater than its depth.
Claim 2
Dependent Claim
29 words
A neutron sensitive detector as claimed in claim 2 in which the electrode is supported in the ceramic member by a tensioning device which holds the electrode in tension.
Claim 3
Dependent Claim
48 words
A neutron sensitive detector as claimed in claim 1 in which the electrode is supported in the ceramic to metal seal by a metal alloy braze, the extended surface of the ceramic extending from the metal braze into the chamber, and the metal shield shrouding that extended surface.
Claim 4
Dependent Claim
51 words
A neutron sensitive detector as claimed in claim 1 comprising an aluminum tube defining said metal body, a stainless steel sleeve, a friction welded connection joining said sleeve within said tube at one end thereof, the stainless steel sleeve supporting the ceramic to metal seal which in turn supports the electrode.
References Cited (Backward Citations)
US2605435A
Cited
US2444915A
Cited
US2505919A
Cited
US2879423A
Cited
US2845560A
Cited
US2835839A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-07 | 1976-05-08 | 1976-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-07 | 1980-05-08 | 1980-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-07 | 1984-05-08 | 1984-11-07 | $7700.00 | Window Closed / Lapsed |