Patent US4579274A successfully refreshed from Google Patents.
US4579274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for lining a nuclear storage or transportation container
Assignee: TRASNUKLEAR GmbH
•
Filing: 1984-03-20
•
Granted: 1986-04-01
•
Expires: 2004-03-20
Abstract
Abstract There are needed for containers for the transportation and/or for the storage of spent fuel elements inner linings which guarantee a good heat contact to the outer container and have little operating expense. This is attained by placing in the outer container a bottom and a flange, then positioning therebetween and welding thereto a jacket provided with an axial slot and thereby a flexible diameter. The slot is then subsequently likewise covered and welded.
Inventors
- 👤 Walter Anspach
- 👤 Karl Brendel
- 👤 Elmar Schlich
- 👤 Peter Srostlik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:34
CPC Classifications
G; G21; G21F; G21F5/00; G21F5/005; G21F5/008; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
120 words
A process of preparing a combination of a cylindrical container adapted for the transportation or storage of radioactive materials such as irradiated fuel elements from nuclear reactors and an inner liner comprising placing an inner liner bottom portion and an inner liner flange in said cylindrical container, then positioning a cylindrical metal jacket portion which has been rolled to final dimension and which is provided with an axial slot between the bottom portion and the flange by compressing together the jacket at the slot axially inserting said jacket portion through the flange subsequently releasing the tension, then welding the jacket portion which now lies inside the cylindrical container to the bottom portion and the flange and subsequently closing the slot.
Claim 2
Dependent Claim
120 words
A process of preparing a combination of a cylindrical container adapted for the transportation or storage of radioactive materials such as irradiated fuel elements from nuclear reactors and an inner liner comprising placing an inner liner bottom portion and an inner liner flange in said cylindrical container, then positioning a cylindrical metal jacket portion which has been rolled to final dimension and which is provided with an axial slot between the bottom portion and the flange by compressing together the jacket at the slot axially inserting said jacket portion through the flange subsequently releasing the tension, then welding the jacket portion which now lies inside the cylindrical container to the bottom portion and the flange and subsequently closing the slot.
Claim 3
Dependent Claim
27 words
A process according to claim 1 including the step of covering the slot by a suitable sheet metal strip and welding the strip to the slot surface.
Claim 4
Dependent Claim
32 words
A process according to claim 2 wherein the jacket is provided with axially-running inner bars on the sides of the slot and the compressing of the jacket is aided by said bars.
Claim 5
Dependent Claim
39 words
A process according to claim 3 wherein the jacket is made of sheet metal having a thickness of up to 10 mm and has been rolled so that it conforms closely to the internal dimension of the cylindrical container.
Claim 6
Dependent Claim
27 words
A process according to claim 4 wherein after positioning the jacket and releasing the tension it is additionally pressed against the inner wall of the cylindrical container.
Claim 7
Dependent Claim
31 words
A process according to claim 1 wherein the jacket is provided with axially-running inner bars on the sides of the slot and compressing of the jacket is aided by said bars.
Claim 8
Dependent Claim
39 words
A process according to claim 1 wherein the jacket is made of sheet metal having a thickness of up to 10 mm and has been rolled so that it conforms closely to the internal dimension of the cylindrical container.
Claim 9
Dependent Claim
27 words
A process according to claim 1 wherein after positioning the jacket and releasing the tension it is additionally pressed against the inner wall of the cylindrical container.
References Cited (Backward Citations)
US1934064A
Cited
US2111791A
Cited
US2414931A
Cited
US3286343A
Cited
US3365786A
Cited
US3442761A
Cited
US3461009A
Cited
US3616521A
Cited
US3780306A
Cited
US3969805A
Cited
US4388752A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-03-31 | 1989-09-30 | 1990-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-31 | 1993-09-30 | 1994-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-31 | 1997-09-30 | 1998-04-01 | $7700.00 | Window Closed / Lapsed |