Patent ID: 7626822

Claim:
A heat sink assembly for removing heat from a plurality of arrays of heat generating-components mounted on a printed circuit board, comprising: two heat sinks each attached to one individual array of the heat-generating components, each of the heat sinks having a first shoulder and a second shoulder respectively extending from two opposite lateral sides thereof; a fixture comprising a head and a shaft extending perpendicularly from the head; a first spring snugly encircling the shaft; and a second spring encircling the shaft and surrounding the first spring; wherein the fixture further comprises a column between the head and the shaft, and a diameter of the column is larger than that of the shaft and smaller than that of the head; wherein the first and second shoulders respectively define a first and second through holes therein; wherein the second shoulder of one of the two heat sinks is disposed on the first shoulder of another of the two heat sinks, the fixture extends through the second and the first through holes, the first spring is compressed between the column and the first shoulder, the second spring is compressed between the head and the second shoulder and a top of the second spring is located above a top of the first spring.