We claim the ornamental design for a sink, as shown and described.
FIG. 1 is a perspective view of another embodiment of the claimed design;
FIG. 2 is a top view of the claimed design shown in FIG. 1;
FIG. 3 is a bottom view of the claimed design shown in FIG. 1;
FIG. 4 is a side view of the claimed design shown in FIG. 1;
FIG. 5 is another side view of the claimed design shown in FIG. 1;
FIG. 6 is another side view of the claimed design shown in FIG. 1;
FIG. 7 is another side view of the claimed design shown in FIG. 1;
FIG. 8 is a cross-sectional view of the claimed design shown in FIG. 1 taken along line 8-8 in FIG. 2;
FIG. 9 is a cross-sectional view of the claimed design shown in FIG. 1 taken along line 9-9 in FIG. 2;
FIG. 10 is an enlarged cross-sectional view of a portion of the claimed design shown in FIG. 1 taken along line 10-10 in FIG. 9;
FIG. 11 is a cross-sectional view of the claimed design shown in FIG. 1 taken along line 11-11 in FIG. 2; and,
FIG. 12 is a cross-sectional view of the claimed design shown in FIG. 1 taken along line 12-12 in FIG. 2.
The ornamental design which is claimed is shown in solid lines in the drawings. The broken lines in the drawings are for illustrative purposes only and form no part of the claimed design. Broken lines formed by equal length dashes show unclaimed portions of the design. Broken lines formed of unequal length dashes (i.e., dash-dot) show boundaries between claimed and unclaimed portions of the design.