We claim the ornamental design for a rim of a drain basin, as shown and described.
FIG. 1 is a perspective view of a rim of a drain basin showing our new design;
FIG. 2 is a top plan view of the rim of a drain basin;
FIG. 3 is a front elevation view of the rim of a drain basin, wherein the back elevation view is identical;
FIG. 4 is a left elevation view of the rim of a drain basin, wherein the right elevation view is identical;
FIG. 5 is a bottom plan view of the rim of a drain basin;
FIG. 6 is a section view of the rim of a drain basin taken along line 6—6 in FIG. 2;
FIG. 7 is an enlarged portion of the section view of the rim of a drain basin shown in FIG. 6; and,
FIG. 8 is an enlarged portion of the section view of the rim of a drain basin shown in FIG. 6.
The broken lines showing the basin in FIGS. 1–7, and showing structural supports, such as ribs, connected to the rim of the basin in FIGS. 1, and 3–7, are shown for illustrative purposes and form no part of the claimed design.