Patent US5829512A successfully refreshed from Google Patents.
US5829512A
Expired / Lapsed
US
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Heatsink and method of forming a heatsink
Assignee: Morgan Stanley and Co LLC
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Filing: 1995-08-29
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Granted: 1998-11-03
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Expires: 2015-08-29
Abstract
Abstract A heatsink for dissipating heat from electronic components, such as integrated circuits, on a circuit board. The heatsink is formed from metal foil and comprises a series of coplanar base portions interposed with transverse fins. The heatsink can be constructed from a length of metal foil which is folded to form the base portions and transverse fins. A base layer comprising, for example, an additional strip of sheet metal material, has adhesive on both sides and is affixed to the base portions of the folded foil on one side and the surface of the electronic component using the adhesive on the other side. The foil or sheet material forming the base portions, fins and base layer of the heatsink are relatively thin and flexible such that lengths of the heatsink can be manufactured and coiled into rolls for transportation and storage. A portion of the heatsink can then be cut to length from the roll thereof and applied to a row of a plurality of components. Since the heatsink is flexible, a single strip of the heatsink can be applied to the surfaces of adjacent components even if the surfaces of those components are not coplanar.
Inventors
- 👤 Mark August
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:04
CPC Classifications
H; H10; H10W; H10W40/00; H10W40/20; H10W40/22; H10W40/226; H10W40/228; H10W70/00; H10W70/01; H10W70/02; H10W70/027
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
49 words
A heatsink, comprising: a metal foil having a series of base portions interposed with transverse fins, wherein said metal foil is folded so as to form said transverse fins and said base portions; and a base sheet coupled to said series of base portions of the folded metal foil.
Claim 2
Dependent Claim
49 words
A heatsink, comprising: a metal foil having a series of base portions interposed with transverse fins, wherein said metal foil is folded so as to form said transverse fins and said base portions; and a base sheet coupled to said series of base portions of the folded metal foil.
Claim 3
Dependent Claim
87 words
A heatsink, comprising: a metal foil having a series of base portions interposed with transverse fins, wherein said metal foil is folded so as to form said transverse fins and said base portions; and wherein each of said fins comprised first and second fin portions of said metal foil joined along a first crease and having adjacent inner surfaces facing one another, and wherein said first and second fin portions are transversely joined along respective second and third creases to respective first and second said base portions.
Claim 4
Dependent Claim
87 words
A heatsink, comprising: a metal foil having a series of base portions interposed with transverse fins, wherein said metal foil is folded so as to form said transverse fins and said base portions; and wherein each of said fins comprised first and second fin portions of said metal foil joined along a first crease and having adjacent inner surfaces facing one another, and wherein said first and second fin portions are transversely joined along respective second and third creases to respective first and second said base portions.
Claim 5
Dependent Claim
19 words
A heatsink as claimed in claim 2, wherein said first and second base portions are at least substantially coplanar.
Claim 6
Dependent Claim
42 words
A heatsink as claimed in claim 2, wherein said first and second fin portions are substantially rectangular, and wherein said first crease is along edges of said first and second fin portions which are opposed to said second and third creases, respectively.
Claim 7
Dependent Claim
41 words
A heatsink as claimed in claim wherein said first and second fin portions are substantially rectangular, and wherein said first crease is along edges of said first and second fin portions which are adjacent to said second and third creases, respectively.
Claim 8
Dependent Claim
40 words
A heatsink as claimed in claim 1, wherein said base sheet comprises a metal foil having first and second surfaces and having said first surface attached to said base portions of said folded metal foil by way of an adhesive.
Claim 9
Dependent Claim
28 words
A heatsink as claimed in claim 6, further including an adhesive applied to said second surface of said base sheet for attaching said heatsink to a component surface.
Claim 10
Dependent Claim
35 words
A heatsink as claimed in claim further comprising a removable protective sheet applied to the adhesive on said base sheet second surface for protecting said adhesive prior to attaching the heatsink to said component surface.
Claim 11
Dependent Claim
34 words
A heatsink as claimed in claim 8, further comprising a removable packing material having portions extending between adjacent fins to prevent bending of the fins prior to attaching the heatsink to said component surface.
Claim 12
Dependent Claim
25 words
A heatsink as claimed in claim 9, wherein said packing material comprises a strip of a foamed plastics material having slits for receiving said fins.
Claim 13
Dependent Claim
64 words
A heatsink, comprising: a metal foil having a series of base portions interposed with transverse fins, wherein said metal foil is folded so as to form said transverse fins and said base portions; and a base sheet coupled to said series of base portions of the folded metal foil, wherein said metal foil comprises an elongate strip that is folded to form said heatsink.
Claim 14
Dependent Claim
64 words
A heatsink, comprising: a metal foil having a series of base portions interposed with transverse fins, wherein said metal foil is folded so as to form said transverse fins and said base portions; and a base sheet coupled to said series of base portions of the folded metal foil, wherein said metal foil comprises an elongate strip that is folded to form said heatsink.
Claim 15
Dependent Claim
26 words
A heatsink as claimed in claim 11, wherein said heatsink is cut to a predetermined elongate length prior to attaching the heatsink to a component surface.
Claim 16
Dependent Claim
74 words
A heatsink, comprising: a metal foil having a series of base portions interposed with transverse fins, wherein said metal foil is folded so as to form said transverse fins and said base portions; and a base sheet coupled to said series of base portions of the folded metal foil, wherein said base portions are flexible to allow the base portions of the heatsink to simultaneously contact a plurality of component surfaces of different heights.
Claim 17
Dependent Claim
74 words
A heatsink, comprising: a metal foil having a series of base portions interposed with transverse fins, wherein said metal foil is folded so as to form said transverse fins and said base portions; and a base sheet coupled to said series of base portions of the folded metal foil, wherein said base portions are flexible to allow the base portions of the heatsink to simultaneously contact a plurality of component surfaces of different heights.
Claim 18
Dependent Claim
13 words
A heatsink as claimed in claim 13, wherein said metal foil is copper.
Claim 19
Dependent Claim
17 words
A heatsink as claimed in claim 13, wherein said metal foil is less than 0.5 millimeters thick.
Claim 20
Dependent Claim
25 words
A heatsink as claimed in claim 15, wherein the thickness of said metal foil is in the range of about 0.025 millimeters to 0.25 millimeters.
Claim 21
Dependent Claim
26 words
A heatsink as claimed in claim 13, wherein said transverse fins extend transversely from said base surfaces by between about 5 millimeters and about 20 millimeters.
Claim 22
Dependent Claim
16 words
A heatsink as claimed in claim 17, wherein said fins extend transversely by about 10 millimeters.
Claim 23
Dependent Claim
36 words
A heatsink comprising: a metal sheet material bent to form a series of base portions interposed with folded transverse fins; and a base sheet coupled to said series of base portions of the metal sheet material.
Claim 24
Dependent Claim
36 words
A heatsink comprising: a metal sheet material bent to form a series of base portions interposed with folded transverse fins; and a base sheet coupled to said series of base portions of the metal sheet material.
Claim 25
Dependent Claim
32 words
A heatsink as claimed in claim 19, wherein said heatsink is flexible to allow said base portions of the heatsink to be attached to a plurality of surfaces, which are not coplanar.
Claim 26
Dependent Claim
64 words
A heatsink comprising: a metal foil having a series of base portions interposed with transverse fins, wherein said metal foil is folded so as to form said transverse fins and said base portions, and wherein said transverse fins have first and second fin portions extending transversely from said base portions and having adjacent inner surfaces which substantially abut each other along said transverse direction.
Claim 27
Dependent Claim
64 words
A heatsink comprising: a metal foil having a series of base portions interposed with transverse fins, wherein said metal foil is folded so as to form said transverse fins and said base portions, and wherein said transverse fins have first and second fin portions extending transversely from said base portions and having adjacent inner surfaces which substantially abut each other along said transverse direction.
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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) | 2001-11-02 | 2002-05-04 | 2002-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-11-02 | 2006-05-04 | 2006-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-11-02 | 2010-05-04 | 2010-11-03 | $7700.00 | Window Closed / Lapsed |