FIG. 1 is a perspective view of a first embodiment of our new design for a convex-concave roller, both rollers having a smooth surface;
FIG. 2 is an end view of the convex-concave roller shown in FIG. 1;
FIG. 3 is a front elevational view of the convex-concave roller shown in FIG. 1;
FIG. 4 is an opposite end view of the convex-concave roller shown in FIG. 1;
FIG. 5 is a side elevational view of the convex-concave roller shown in FIG. 1;
FIG. 6 is a rear elevational view of the convex-concave roller shown in FIG. 1;
FIG. 7 is an opposite side elevational view of the convex-concave roller shown in FIG. 1;
FIG. 8 is a perspective view of a second embodiment of our new design for a convex-concave roller, both rollers having a flocked or a textured surface;
FIG. 9 is an end view of the convex-concave roller shown in FIG. 8;
FIG. 10 is a front elevational view of the convex-concave roller shown in FIG. 8;
FIG. 11 is an opposite end view of the convex-concave roller shown in FIG. 8;
FIG. 12 is a side elevational view of the convex-concave roller shown in FIG. 8;
FIG. 13 is a rear elevational view of the convex-concave roller shown in FIG. 8;
FIG. 14 is an opposite side elevational view of the convex-concave roller shown in FIG. 8;
FIG. 15 is a perspective view of a third embodiment of our new design for a convex-concave roller, one roller having a smooth surface and the other roller having a flocked or textured surface;
FIG. 16 is an end view of the convex-concave roller shown in FIG. 15;
FIG. 17 is a front elevational view of the convex-concave roller shown in FIG. 15;
FIG. 18 is an opposite end view of the convex-concave roller shown in FIG. 15;
FIG. 19 is a side elevational view of the convex-concave roller shown in FIG. 15;
FIG. 20 is a rear elevational view of the convex-concave roller shown in FIG. 15;
FIG. 21 is an opposite side elevational view of the convex-concave roller shown in FIG. 15;
FIG. 22 is a perspective view of a fourth embodiment of our new design for a convex-concave roller, one roller having a smooth surface and the other roller having a flocked or textured surface;
FIG. 23 is an end view of the convex-concave roller shown in FIG. 22;
FIG. 24 is a front elevational view of the convex-concave roller shown in FIG. 22;
FIG. 25 is an opposite end view of the convex-concave roller shown in FIG. 22;
FIG. 26 is a side elevational view of the convex-concave roller shown in FIG. 22;
FIG. 27 is a rear elevational view of the convex-concave roller shown in FIG. 22; and,
FIG. 28 is an opposite side elevational view of the convex-concave roller shown in FIG. 22.