US4320847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container for receiving and storing spent fuel elements
Assignee: N U K E M A CORP OF GERMANY GmbH
•
Filing: 1980-07-15
•
Granted: 1982-03-23
•
Expires: 2000-07-15
Abstract
Abstract For the storage of spent fuel elements there are needed containers consisting of can and cover which undergo a preliminary sealing in inserting the cover, produce a uniform weld gap, are not jammed in opening and are repeatedly reusable. Such containers are obtained if the cans have a frusto conical widening at the upper end and the cover likewise has a frusto conical region in which there is formed between the two conical regions an acute angle of preferably 1°-7°.
Inventors
- 👤 Gernot Gesser
- 👤 Franz Hauer
- 👤 Berthold Racky
- 👤 Dieter Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:48
CPC Classifications
G; G21; G21F; G21F5/00; G21F5/06; G21F5/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
95 words
A container adapted to receive and store spent fuel elements consisting essential of a metal can and an inwardly curved cover having a torispherical head, said can having a frusto conical widening region at the upper end thereof and the cover above the torispherical head also having a frusto conical region, there being formed between the two conical regions at the place of contact an acute angle (α) of 1°-7°, the frusto conical widening of the can forming an angle (β) of 3°-10° to the extension of the surface of the line of the can.
Claim 2
Dependent Claim
95 words
A container adapted to receive and store spent fuel elements consisting essential of a metal can and an inwardly curved cover having a torispherical head, said can having a frusto conical widening region at the upper end thereof and the cover above the torispherical head also having a frusto conical region, there being formed between the two conical regions at the place of contact an acute angle (α) of 1°-7°, the frusto conical widening of the can forming an angle (β) of 3°-10° to the extension of the surface of the line of the can.
Claim 3
Dependent Claim
19 words
A container according to claim 1 wherein the length of the conical widening of the can is 50-150 mm.
Claim 4
Dependent Claim
36 words
A container according to claim 2 wherein the frusto conical region of the cover has a diameter such that the cover rim in the applied condition is 1-10 mm below the upper rim of the can.
Claim 5
Dependent Claim
36 words
A container according to claim 1 wherein the frusto conical region of the cover has a diameter such that the cover rim in the applied condition is 1-10 mm below the upper rim of the can.
References Cited (Backward Citations)
US1853112A
Cited
US2480376A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-03-22 | 1985-09-21 | 1986-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-22 | 1989-09-21 | 1990-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-22 | 1993-09-21 | 1994-03-23 | $7700.00 | Window Closed / Lapsed |