EP0088246A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Telescopic thermal conduction element for semiconductor devices
Assignee: International Business Machines Corp
•
Filing: 1983-02-08
•
Granted: —
•
Expires: 2003-02-08
Abstract
Abstract A telescoping heat exchange element (24) for conducting heat in a semiconductor package from a device (10) to a spaced heat sink (16) having a first cup-shaped member (26), a second cup-shaped member (32) positioned in telescoping slidable relation with said first member, and means (30, 36) to provide a firm sliding contact between said first and second members.
Inventors
- 👤 Demetrios Balderes
- 👤 Joseph Louis Horvath
- 👤 Lewis Drucker Lipschutz
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 19:10
CPC Classifications
H; H10; H10W; H10W40/00; H10W40/70; H10W40/77; H10W40/774; H10W72/00; H10W72/071; H10W72/072; H10W72/07251; H10W72/20
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
109 words
A compliant telescoping heat exchange element (24) for conducting heat in a semiconductor package from a semiconductor device to a spaced heat sink comprising a first cup-shaped member (26) formed of heat conductive material provided with a flat bottom surface (28) and an annular wall (30), a second cup-shaped member (32) formed of heat conductive material provided with a flat bottom surface (34), and an annular resilient slotted wall (36) juxtaposed in telescoping slidable relation to said wall of said first cup-shaped member, and means to provide a firm sliding contact between said wall of said first cup-shaped member and the resilient slotted wall of said second cup-shaped member.
Claim 2
Dependent Claim
109 words
A compliant telescoping heat exchange element (24) for conducting heat in a semiconductor package from a semiconductor device to a spaced heat sink comprising a first cup-shaped member (26) formed of heat conductive material provided with a flat bottom surface (28) and an annular wall (30), a second cup-shaped member (32) formed of heat conductive material provided with a flat bottom surface (34), and an annular resilient slotted wall (36) juxtaposed in telescoping slidable relation to said wall of said first cup-shaped member, and means to provide a firm sliding contact between said wall of said first cup-shaped member and the resilient slotted wall of said second cup-shaped member.
Claim 3
Dependent Claim
46 words
The heat exchange element of claim 1, wherein said means to provide firm sliding contact includes an outward flaring of the wall (36) of the second cup-shaped member (32), said outwardly flared wall maintained under stress by the wall (30) of the first cup-shaped member (26).
Claim 4
Dependent Claim
43 words
The heat exchange element of claim 2, wherein said wall of the first cup-shaped member (26) is substantially perpendicular to the bottom surface (28), whereby an area contact is obtained between said walls of the first and the second cup-shaped members (26, 32).
Claim 5
Dependent Claim
23 words
The heat exchange element of claim 3, wherein the bottom surfaces (28, 34) of the cup-shaped members (26, 32) are rectangular or square.
Claim 6
Dependent Claim
21 words
The heat exchange element of claim 3, wherein the bottom surfaces (28, 34) of the cup-shaped members (26, 32) are circular.
Claim 7
Dependent Claim
27 words
The heat exchange element of claim 3, wherein heat conductive material of the cup-shaped members (26, 32) is a metal, in particular copper, silver or alloys thereof.
Claim 8
Dependent Claim
96 words
The heat exchange element of claims 1, 3, or 4, wherein the means to provide firm sliding contact between the wall (30) of the first cup-shaped member (26) and the wall (30) of the second cup-shaped member (32) is comprised of an outwardly flared arcuate end portion on said wall of said first cup-shaped member, an inwardly directed arcuate end portion on said wall of said second cup-shaped member, said flared arcuate end portion and said inwardly directed arcuate surface maintaining sliding contact and also providing a force to bias said cup-shaped members in extended relation.
Claim 9
Dependent Claim
21 words
The heat exchange element of claim 7, wherein the wall (30, 36) of the first cup-shaped member (26, 32) is slotted.
Claim 10
Dependent Claim
23 words
The heat exchange element of claim 1, which further includes a spring (38) to bias the cup-shaped members (26, 32) in extensible relation.
Claim 11
Dependent Claim
27 words
The heat exchange element of claim 9, which further includes interlocking corner tabs (40, 42) on said walls that prevent separation of the cup-shaped members (26, 32).
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.