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US4065352A
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Nuclear fuel element
Assignee: Toshiba Corp
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Filing: 1976-06-09
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Granted: 1977-12-27
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Expires: 1996-06-09
Abstract
Abstract A nuclear fuel element containing a hydrogen getter to prevent a cladding tube from being broken by hydrogen gas, wherein the hydrogen getter is formed of metal material capable of absorbing hydrogen and a metal member permeable to hydrogen and enclosing said hydrogen-absorbing metal.
Inventors
- 👤 Yoshihiko Iwano
- 👤 Katsumi Une
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:18
CPC Classifications
G; G21; G21C; G21C3/00; G21C3/02; G21C3/04; G21C3/16; G21C3/17; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
66 words
In a nuclear fuel element constructed by sealing nuclear fuel material in a cladding tube, the improvement which comprises a hydrogen getter formed of hydrogen-absorbing metal material enclosed in a hydrogen-permeable metal member which does not allow the passage of water, oxygen and other gases fitted into the cladding tube, whereby the hydrogen-absorbing metal material is prevented from having the surface coated with a protective film.
Claim 2
Dependent Claim
66 words
In a nuclear fuel element constructed by sealing nuclear fuel material in a cladding tube, the improvement which comprises a hydrogen getter formed of hydrogen-absorbing metal material enclosed in a hydrogen-permeable metal member which does not allow the passage of water, oxygen and other gases fitted into the cladding tube, whereby the hydrogen-absorbing metal material is prevented from having the surface coated with a protective film.
Claim 3
Dependent Claim
26 words
A nuclear fuel element according to claim 1, wherein the hydrogen-absorbing metal material is one selected from a group consisting of zirconium, titanium and alloys thereof.
Claim 4
Dependent Claim
27 words
A nuclear fuel element according to claim 1, wherein the metal permeable to hydrogen is one selected from a group consisting of palladium, alloys thereof and rhenium.
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) | 1980-12-26 | 1981-06-27 | 1981-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-26 | 1985-06-27 | 1985-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-26 | 1989-06-27 | 1989-12-27 | $7700.00 | Window Closed / Lapsed |