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US4467860A
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Device for cooling semi-conductors
Assignee: Individual
•
Filing: 1982-06-03
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Granted: 1984-08-28
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Expires: 2002-06-03
Abstract
Abstract Device for cooling semi-conductors wherein the cooler has an external surface for bearing against the cooled element. The cooler is characterized by an internal chamber having a plurality of spaced apart cooling studs.
Inventors
- 👤 Alec Wargo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:08
CPC Classifications
H; H10; H10W; H10W40/00; H10W40/40; H10W40/47
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
95 words
A cooler for use with semi-conductor power elements which comprises: a one-piece metal casting having an essentially planar external surface and an internal cooling chamber for receiving a cooling medium, cooling medium inlet and outlet means communicating with said chamber for ingress and egress of cooling medium, and from 5 to 25 substantially round cooling pins within said chamber, wherein said pins are spaced 0.15 to 0.3" from each other and all of said pins have a diameter of from 0.15 to 0.5" to provide a tortuous path and turbulent flow for said cooling medium.
Claim 2
Dependent Claim
95 words
A cooler for use with semi-conductor power elements which comprises: a one-piece metal casting having an essentially planar external surface and an internal cooling chamber for receiving a cooling medium, cooling medium inlet and outlet means communicating with said chamber for ingress and egress of cooling medium, and from 5 to 25 substantially round cooling pins within said chamber, wherein said pins are spaced 0.15 to 0.3" from each other and all of said pins have a diameter of from 0.15 to 0.5" to provide a tortuous path and turbulent flow for said cooling medium.
Claim 3
Dependent Claim
40 words
A cooler according to claim 1 having an essentially planar, external upper surface and an essentially planar external lower surface, with said chamber being located therebetween, wherein the distance within said chamber from said surface is from 0.25 to 0.4".
Claim 4
Dependent Claim
22 words
A cooler according to claim 2 wherein said upper and lower surfaces each have a wall thickness of from 0.1 to 0.150".
Claim 5
Dependent Claim
17 words
A cooler according to claim 1 wherein said pins have a diameter of from 0.15 to 0.30".
Claim 6
Dependent Claim
19 words
A cooler according to claim 4 including a larger center pin having a diameter of from 0.25 to 0.5".
Claim 7
Dependent Claim
23 words
A cooler according to claim 1 wherein the inlet and outlet are spaced from each other on the same side of said cooler.
Claim 8
Dependent Claim
12 words
A cooler according to claim 1 including baffle means inside said chamber.
Claim 9
Dependent Claim
22 words
A cooler according to claim 1 wherein said metal is selected from the group consisting of copper, aluminum and base alloys thereof.
Claim 10
Dependent Claim
24 words
A cooler according to claim 1 including means within said chamber to insure circulation of the cooling medium and to increase cooling medium turbulence.
References Cited (Backward Citations)
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Cited
US3209640A
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US3400543A
Cited
US3524497A
Cited
GB1306224A
Cited
US4151548A
Cited
US4188996A
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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) | 1987-08-28 | 1988-02-27 | 1988-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-28 | 1992-02-27 | 1992-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-28 | 1996-02-27 | 1996-08-28 | $7700.00 | Window Closed / Lapsed |