FIG. 1 is a front perspective view of our design;
FIG. 2 is a front elevational view;
FIG. 3 is a rear elevational view;
FIG. 4 is a top plan view;
FIG. 5 is a bottom plan elevational view;
FIG. 6 is a cross-sectional view taken along the line 6-6 of FIG. 2;
FIG. 7 fragmentary cross-sectional view of a portion of FIG. 6;
FIG. 8 is a right side elevational view;
FIG. 9 is a left side elevational view;
FIG. 10 is a cross-sectional view taken along the line 10-10 of FIG. 2;
FIG. 11 is front perspective view of a second embodiment of our new design;
FIG. 12 is a front elevational view;
FIG. 13 is a rear elevational view;
FIG. 14 is a top plan view;
FIG. 15 is a bottom plan elevational view;
FIG. 16 is a cross-sectional view taken along the line 16-16 of FIG. 12;
FIG. 17 fragmentary cross-sectional view of a portion of FIG. 16;
FIG. 18 is a right side elevational view;
FIG. 19 is a left side elevational view; and,
FIG. 20 is a cross sectional view taken along the line 20-20 of FIG. 12.