FIG. 1 is a front elevational view of a cover ring, showing our new design;

FIG. 2 is a right side elevational view thereof, the left side elevational view being a mirror image of the view shown;

FIG. 3 is a top plan view thereof, the bottom plan view being a mirror image of the side shown;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a cross-sectional view thereof taken along line 5—5 in FIG. 1; and,

FIG. 6 is a bottom and front side view thereof.