US4241380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Housing for an electric circuit arrangement
Assignee: Danfoss AS
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Filing: 1979-03-07
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Granted: 1980-12-23
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Expires: 1999-03-07
Abstract
Abstract The invention relates to a housing assembly for electrical equipment which provides for the efficient removal of heat produced by high heat producing electrical components. A perimeter wall has the usual external cooling fins. A divider wall arrangement for forming two or more enclosed spaces provides vertically extending flue passages to create a chimney effect. The divider wall arrangement allows components to be mounted on both sides thereof.
Inventors
- 👤 Kjeld Lehmann
- 👤 Arne V. R. Rasmussen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:01
CPC Classifications
H; H05; H05K; H05K7/00; H05K7/20; H05K7/2039; H05K7/20518
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
111 words
A housing assembly for electrical equipment comprising, external wall means laterally defining an enclosed space, intermediate wall means of a thermally conductive material attached to said external wall means and dividing said enclosed space into at least two laterally enclosed compartments with substantially no lateral fluid communication between any of said compartments, said intermediate wall means forming flue means between at least two of said compartments to provide a chimney effect to direct air upwardly which is warmer than atmospheric air, said flue means having the top and bottom thereof open to the atmosphere externally of said compartments, and said intermediate wall means having electrical components mounted on both sides thereof.
Claim 2
Dependent Claim
111 words
A housing assembly for electrical equipment comprising, external wall means laterally defining an enclosed space, intermediate wall means of a thermally conductive material attached to said external wall means and dividing said enclosed space into at least two laterally enclosed compartments with substantially no lateral fluid communication between any of said compartments, said intermediate wall means forming flue means between at least two of said compartments to provide a chimney effect to direct air upwardly which is warmer than atmospheric air, said flue means having the top and bottom thereof open to the atmosphere externally of said compartments, and said intermediate wall means having electrical components mounted on both sides thereof.
Claim 3
Dependent Claim
38 words
A housing assembly according to claim 1 wherein said electrical components include generally higher power components on one side of said intermediate wall means and generally lower power components on the other side of said intermediate wall means.
Claim 4
Dependent Claim
30 words
A housing assembly according to claim 1 wherein said intermediate wall means includes two walls having vertically extending juxtaposed recesses dividing and flue means into a plurality of discrete channels.
Claim 5
Dependent Claim
17 words
A housing assembly according to claim 3 wherein a planar plate is disposed between said two walls.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-23 | 1984-06-23 | 1984-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-23 | 1988-06-23 | 1988-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-23 | 1992-06-23 | 1992-12-23 | $7700.00 | Window Closed / Lapsed |