Patent ID: 7265980

Claim:
A frame of a heat sink for a CPU in a computer, comprising: a quadrilateral frame member, providing a first side and a second side, which is opposite to the first side, the first side having a length being equal to the width of the heat sink and having an opening block step, the block step having the bottom thereof being the same elevation as the top of the second side; and four stop plates, being upright from the four corners of the frame member respectively, being positioned in parallel to each other and two of the stop plates, which are disposed at both ends of the first side, providing an inner surface respectively and a distance between the respective inner surface being equal to the length of the first side; characterized in that a reinforcing rib is disposed between another two of the stop plates, which are disposed at both ends of the second side, and is parallel to the second side with an elevation higher than the top of the second side and a distance between the inner surface of the reinforcing rib and the block step is equal to the depth of the heat sink.