FIG. 1 is a perspective view of the base element of new design;
FIG. 2 is a top view thereof;
FIG. 3 is a right side view in elevational thereof;
FIG. 4 is a left side view in elevation thereof;
FIG. 5 is a rear view in elevation thereof;
FIG. 6 is a front view in elevation thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is a top view of the base element in engagement with a rod element and three balls;
FIG. 9 is an elevation view of the rod element of the device;
FIG. 10 is a view in elevation of the ball element of the device;
FIG. 11 is a perspective view of the rod element including annular elastic rings;
FIG. 12 is a left side view in elevation of the device in engagement with the rod and a ball; and,
FIG. 13 is a right side view in elevation of the device in engagement with a rod and a ball.
The broken lines illustrate environmental structure and form no part of the claimed design.
