US3734827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nuclear-reactor structure
Assignee: G Siempelkamp GmbH and Co KG
•
Filing: 1970-01-05
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Granted: 1973-05-22
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Expires: 1990-01-05
Abstract
Abstract A NUCLEAR-REACTOR STRUCTURE IN WHICH THE REACTOR CORE IS HOUSED IN A METALLIC ENCLOSURE SERVING IN PART AS A PRESSURE VESSEL AND AT LEAST IN PART AS A RADIOACTIVE SHIELD. THE WALLS OF THE STRUCTURE ARE MADE UP OF PRESTRESSED CAST-IRON BODIES WHICH MAY HAVE INTERFITTING OR INTERLOCKING FORMATIONS WITH ANY GAPS FILLED BY PRESSURE-RETAINING COMPOUNDS. STRESSING MAY BE EFFECTED BY RRODS OR CABLES RUNNING THROUGH THE CAST-IRON ELEMENTS OR BY EXTERNALLY POSITIONED CABLES, WIRES, BANDS OR RINGS.
Inventors
- 👤 F Schilling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:40
CPC Classifications
G; G21; G21C; G21C15/00; G21C15/02; G21C15/12; G21C11/00; G21C11/02; G21C13/00; G21C13/08; G21C13/087; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |