US3722579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat transfer system for radioisotope generators
Assignee: United States Department of the Navy
•
Filing: 1971-03-05
•
Granted: 1973-03-27
•
Expires: 1991-03-05
Abstract
Abstract A device to dissipate heat from a radioisotope generator mounted in a separate housing which is designed to protect the generator from excessive water pressure. The device includes a pair of split elongate heat transfer cylinders positioned around the generator within the housing. One of the cylinders is in a contiguous relationship with the generator while the other cylinder is contiguous only to the housing. Both cylinders are in an end abutting relationship so as to provide a path for the flow of heat to the housing.
Inventors
- 👤 R Hitchcock
- 👤 Mahan G Mc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:09
CPC Classifications
F; F28; F28F; F28F13/00; G; G21; G21H; G21H1/00; G21H1/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
93 words
A device to dissipate heat from a radioisotope generator which is enclosed in a separate protective housing comprising: a first elongate heat transfer cylinder positioned around said generator and contiguous thereto, and a second elongate heat transfer cylinder also enclosing said generator but contiguous to the housing, said first and second cylinders both being in an abutting relationship along the contiguous end wall portions, said heat transfer cylinders adapted to satisfactorily conduct heat to the exterior heat sink when the generator temperature is not less than 2.5* C above the heat sink temperature.
Claim 2
Independent Claim
93 words
A device to dissipate heat from a radioisotope generator which is enclosed in a separate protective housing comprising: a first elongate heat transfer cylinder positioned around said generator and contiguous thereto, and a second elongate heat transfer cylinder also enclosing said generator but contiguous to the housing, said first and second cylinders both being in an abutting relationship along the contiguous end wall portions, said heat transfer cylinders adapted to satisfactorily conduct heat to the exterior heat sink when the generator temperature is not less than 2.5* C above the heat sink temperature.
Claim 3
Dependent Claim
31 words
The heat dissipation device as defined in claim 1 wherein both the first and second heat transfer cylinders are transversely split to ensure firm contact with the generator and the housing.
Claim 4
Dependent Claim
44 words
A device to dissipate heat from a heat generator enclosed in a protective housing as defined in claim 1 wherein: a wedge assembly is positioned adjacent said second cylinder to maintain the expanded condition of said cylinder and insure contact thereof with the housing.
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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |