| US 7,474,529 B2 | ||
| Folded-sheet-metal heatsinks for closely packaged heat-producing devices | ||
| Shurong Tian, Yorktown Heights, N.Y. (US); Shawn A. Hall, Pleasantville, N.Y. (US); and Paul W. Coteus, Yorktown, N.Y. (US) | ||
| Assigned to International Business Machines Corporation, Armonk, N.Y. (US) | ||
| Filed on Nov. 29, 2006, as Appl. No. 11/564,353. | ||
| Prior Publication US 2008/0123300 A1, May 29, 2008 | ||
| Int. Cl. H05K 7/20 (2006.01) | ||
| U.S. Cl. 361—704 [361/715; 361/716; 361/719; 361/721; 275/712; 165/80.3; 165/185] | 4 Claims |
| 1. An assembly comprising:
one or more heat-producing devices each having an exposed substantially planar surface;
a folded heatsink formed from a continuous sheet of metal for cooling the heat-producing devices, the folded heatsink comprising:
a base having a first end and a second end and lying substantially parallel to the exposed substantially planar surface of
one or more of the heat-producing devices and affixed in thermal contact thereto;
two shoulders each having a proximal end and a distal end, said proximal ends of said shoulders projecting substantially at
right angles from said first and second ends of said base; and
two arms each having a proximal end and a distal end, said proximal ends of said arms projecting substantially at right angles
from said distal ends of said shoulders such that the base, shoulders and arms form a nearly closed rectangular tube; and
a finned heatsink in contact with the planar surface of one or more of the heat-producing devices that are not in contact
with the folded heatsink.
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