Patent US3620691A successfully refreshed from Google Patents.
US3620691A
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Zirconium structure
Assignee: Siemens AG
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Filing: 1965-03-26
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Granted: 1971-11-16
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Expires: 1985-03-26
Abstract
Abstract Structure having an inner core comprising a high-strength zirconium alloy, a layer of a gas diffusion-impeding material on the surface of the core and a highly corrosion-resistant zirconium alloy layer engirdling the core and in intimate contact with the gas diffusion-impeding layer.
Inventors
- 👤 Hartmut Rubel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 23:07
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/01; B32B1/00; B32B1/08; G; G21; G21C; G21C3/00; G21C3/02; G21C3/04; G21C3/06; B32B2307/00; B32B2307/70; B32B2307/714; B32B2309/00; B32B2309/08; B32B2309/10; B32B2309/105; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10S; Y10S376/00; Y10S376/90; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2942; Y10T428/2944; Y10T428/298
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
33 words
A nuclear reactor component structure according to claim 1 wherein the material of said inner layer impedes the diffusion of hydrogen, is resistant to radiation and has a low neutron absorption cross section.
Claim 2
Dependent Claim
28 words
A nuclear reactor component structure according to claim 1 wherein the material of said inner layer is selected from the group consisting of iron, aluminum and zirconium oxide.
Claim 3
Dependent Claim
82 words
A nuclear reactor component structure comprising an inner core formed of a zirconium alloy having the composition Zr- Al. 1.25 Sn 1 Mo 1, an inner layer of zirconium oxide for impeding diffusion of gas causing embrittlement of the zirconium alloy disposed on the surface of said core of zirconium alloy, and an outer layer of another zirconium alloy engirdling said core and being in intimate contact with said inner layer, said other zirconium alloy having the composition ZrNb 2.5 Cu 0.5.
Claim 4
Dependent Claim
22 words
A structure as defined in claim 4 wherein said zirconium oxide layer has a thickness of about 1 to 10 Mu .
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) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |