Patent ID: 7721790
Filing Date: 2010-05-25
Classification: B21D,F28F,H01L,Y10T

Abstract:
1. A heat sink including a first metal fin and a second metal fin interlocked with each other, each of the first and second metal fins comprising: a main plate made of a metal; a flange extending forwardly from the main plate, the flange defining a hole therein; a protruding finger extending further forwardly from the flange and being aligned with said hole, including a connecting tab and a locking tab, the connecting tab interconnecting the flange with the locking tab, the locking tab being curved inwardly from the connecting tab towards the main plate; and a controlling member formed from the main plate beneath the flange and being aligned with the protruding finger for securing a fitting and tight engagement between the first and second metal fins; wherein the locking tab of the first metal fin is received in the hole of the second metal fin and fittingly abuts with the controlling member of the second metal fin so as to interlock the first and second metal fins together.