FIG. 1 is a front elevational view of our design;
FIG. 2 is a top plan view;
FIG. 3 is a bottom plan view;
FIG. 4 is a cross-sectional view taken along the line 4-4 of FIG. 1;
FIG. 5 is an enlarged, fragmentary view of a portion of FIG. 4;
FIG. 6 is a left side elevational view;
FIG. 7 is a right side elevational view;
FIG. 8 is a cross-sectional view taken along the line 8-8 of FIG. 1;
FIG. 9 is an enlarged, fragmentary view of a portion of FIG. 8;
FIG. 10 is a front elevational view of second embodiment of our design;
FIG. 11 is a top plan view;
FIG. 12 is a bottom plan view;
FIG. 13 is a cross-sectional view taken along the line 13-13 of FIG. 10;
FIG. 14 is an enlarged, fragmentary view of a portion of FIG. 13;
FIG. 15 is a left side elevational view;
FIG. 16 is a right side elevational view;
FIG. 17 is a cross-sectional view taken along the line 8-8 of FIG. 1;
FIG. 18 is an enlarged, fragmentary view of a portion of FIG. 17;
FIG. 19 is a front elevational view of a third embodiment of our design;
FIG. 20 is a top plan view;
FIG. 21 is a bottom plan view;
FIG. 22 is a cross-sectional view taken along the line 22-22 of FIG. 19;
FIG. 23 is an enlarged, fragmentary view of a portion of FIG. 22;
FIG. 24 is a left side elevational view;
FIG. 25 is a right side elevational view;
FIG. 26 is a cross-sectional view taken along the line 26-26 of FIG. 19;
FIG. 27 is an enlarged, fragmentary view of a portion of FIG. 19;
FIG. 28 is a front elevational view of a fourth embodiment of our design;
FIG. 29 is a top plan view;
FIG. 30 is a bottom plan view;
FIG. 31 is a cross-sectional view taken along the line 31-31 of FIG. 28;
FIG. 32 is an enlarged, fragmentary view of a portion of FIG. 31;
FIG. 33 is a left side elevational view;
FIG. 34 is a right side elevational view;
FIG. 35 is a cross-sectional view taken along the line 35-35 of FIG. 28; and,
FIG. 36 is an enlarged, fragmentary cross section view of a portion of FIG. 35.
The broken lines are for illustrative purposes only and form no part of the claimed design.