Heat Sink

FIG. 1 is a top perspective view of a heat sink;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a first side view thereof;

FIG. 6 is an opposite first side view thereof;

FIG. 7 is a second side view thereof; and,

FIG. 8 is an opposite second side view thereof.

The broken lines in the drawings illustrate portions of the article that form no part of the claimed design.