|7272007||Locking device for heat sink||September, 2007||Lee et
al.||361/704| |7239518||Universal locking device for heat
sink||July, 2007||Yang et al.||361/704| |20060120053||Universal
locking device for heat sink||June, 2006||Lee et al.||361/704|
|20050180114||Heat dissipating device incorporating
clip||August, 2005||Zhou et al.||361/704| |20030159819||Heatsink
device for cooling chipset||August, 2003||Lee||165/185|
|6477050||Tilt-away processor retention module with hold-down
screw device||November, 2002||Herring et al.||361/704|
|6470962||Retaining tool of heat radiator||October,
2002||Pao||165/80.3| |6246584||Heat sink||June, 2001||Lee et
al.||361/704| |5353863||Pentium CPU cooling device||October,
1994||Yu||165/80.3| 1. Field of the Invention The present
invention relates to a heat sink module, especially to a heat
sink module that is mounted on a chip on a circuit board. 2.
Description of the Prior Arts Heat sink modules are used to
dissipate heat from and lower the temperature of circuit boards,
espec