US3779865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feed-through connection for a pressure vessel, especially a nuclear-reactor shell
Assignee: Fried Krupp AG
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Filing: 1970-10-12
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Granted: 1973-12-18
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Expires: 1990-10-12
Abstract
Abstract The concrete shell of a nuclear reactor, through which conduits extend, is formed with a feed-through connector anchored in the wall of the structure and traversing same. The connector includes a self-blocking safety snap-action conduit coupling surrounded by a containment including a metallic duct, a pressure reducing packing received in the duct around the conduit, and means for evacuating the annular space about the latter to eliminate leakage fluids.
Inventors
- 👤 H Schafstall
- 👤 W Furste
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:35
CPC Classifications
G; G21; G21C; G21C13/00; G21C13/02; G21C13/032; G21C13/036; G21C9/00; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
64 words
The nuclear-reactor structure defined in claim 1 wherein said sheath is a steel tube of cylindrical configuration welded at an interior end to said liner and having an exterior end terminating along an external face of said wall, and a hood flanged to said tube at said external end and of generally bell-shaped configuration surrounding said conduit, said hood being filled with said medium.
Claim 2
Dependent Claim
21 words
The nuclear-reactor structure defined in claim 2, further comprising an expansion bellows connected to said hood and secured to said conduit.
Claim 3
Dependent Claim
18 words
The nuclear-reactor structure defined in claim 2 wherein said conduit is provided with two such safety closures therealong.
Claim 4
Dependent Claim
33 words
The nuclear-reactor structure defined in claim 2, further comprising at least one other such conduit traversing said sheath and surrounded by said medium while being provided with at least one such self-sealing coupling.
References Cited (Backward Citations)
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Cited
GB602737A
Cited
US2627580A
Cited
US2930633A
Cited
GB873794A
Cited
US3355357A
Cited
US3353848A
Cited
US3488067A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |