Chuck
FIG. 1 is a perspective view of a chuck in accordance with an embodiment of the present invention; 
     FIG. 2 is a top view of the chuck illustrated in FIG. 1; 
     FIG. 3 is a bottom view of an embodiment of the chuck illustrated in FIGS. 1 and 2; 
     FIG. 4 is a side view of the chuck illustrated in FIG. 3; 
     FIG. 5 is a bottom view of another embodiment of the chuck illustrated in FIGS. 1 and 2; and, 
     FIG. 6 is a side view of the chuck illustrated in FIG. 5.