FIG. 1 is a front elevational view showing my new design;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is right side elevational view thereof;
FIG. 6 is a left side elevational view thereof;
FIG. 7 is a cross-sectional view taken along the line 7—7 in FIG. 1, shown at an enlarged scale;
FIG. 8 is a cross-sectional view taken along the line 8—8 in FIG. 1;
FIG. 9 is a cross-sectional view taken along the line 9—9 in FIG. 1; and,
FIG. 10 is a cross-sectional view taken along the line 10—10 in FIG. 5, shown at an enlarged scale.