FIG. 1 is an upper right front perspective view of a first embodiment;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a left side elevational view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is an upper right front perspective view of a second embodiment;
FIG. 7 is a front elevational view thereof;
FIG. 8 is a left side elevational view thereof;
FIG. 9 is a top plan view thereof;
FIG. 10 is a bottom plan view thereof;
FIG. 11 is an upper right front perspective view of a third embodiment;
FIG. 12 is a front elevational view thereof;
FIG. 13 is a left side elevational view thereof;
FIG. 14 is a top plan view thereof; and,
FIG. 15 is a bottom plan view thereof.