US3732423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shipping container for radioactive material
Assignee: NUCLEAR ASSURANCE Corp A DE CORP
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Filing: 1971-05-24
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Granted: 1973-05-08
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Expires: 1991-05-24
Abstract
Abstract A body means includes inner and outer shell means having radiation shielding means therebetween and defining gaps at the interfaces between the shielding means and the shell means. Means is provided in said gaps having a thermal conductivity which is substantially greater than that of air and which inhibits corrosion of the radiation shielding means. Means is also provided for releasing the means in said gaps into the cavity within the body means at a predetermined temperature.
Inventors
- 👤 R Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:06
CPC Classifications
G; G21; G21F; G21F5/00; G21F5/005
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
134 words
A shipping container for radioactive material comprising body means defining a radioactive material receiving cavity therewithin, said body means including inner shell means, outer shell means spaced from said inner shell means and defining a space therebetween, uranium cast radiation shielding means disposed in said space and forming gaps at the interfaces between the shielding means and said shell means, material substantially filling said gaps having a thermal conductivity which is substantially greater than that of air to facilitate hEat transfer between said shielding means and said shell means, and pressure sensitive means arranged in said inner shell means for venting said conductive material into said receiving cavity upon the attainment of a predetermined pressure within said gaps, said conductive material capable of cooling radioactive material and inhibiting corrosion of said radiation shielding means.
Claim 2
Dependent Claim
134 words
A shipping container for radioactive material comprising body means defining a radioactive material receiving cavity therewithin, said body means including inner shell means, outer shell means spaced from said inner shell means and defining a space therebetween, uranium cast radiation shielding means disposed in said space and forming gaps at the interfaces between the shielding means and said shell means, material substantially filling said gaps having a thermal conductivity which is substantially greater than that of air to facilitate hEat transfer between said shielding means and said shell means, and pressure sensitive means arranged in said inner shell means for venting said conductive material into said receiving cavity upon the attainment of a predetermined pressure within said gaps, said conductive material capable of cooling radioactive material and inhibiting corrosion of said radiation shielding means.
Claim 3
Dependent Claim
17 words
A shipping container as defined in claim 1 wherein the means in said gaps is a gas.
Claim 4
Dependent Claim
13 words
A shipping container as defined in claim 2 wherein said gas comprises helium.
Claim 5
Dependent Claim
29 words
A shipping container as defined in claim 1 wherein said releasing means includes ball valve means for controlling the flow of the means in said gaps into said cavity.
References Cited (Backward Citations)
US3466444A
Cited
US3488502A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-07 | 1976-11-06 | 1977-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-07 | 1980-11-06 | 1981-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-07 | 1984-11-06 | 1985-05-08 | $7700.00 | Window Closed / Lapsed |