Hub for cassette storage containers

FIG. 1 is a perspective view of a hub for cassette storage containers showing my new design in the position of use; the broken line showing an additional hub and the container being for illustrative purposes only and forming no part of the claimed design;

FIG. 2 is an enlarged perspective view of a hub for cassette storage containers showing my new design;

FIG. 3 is a right side elevational view of FIG. 2, the left side being identical;

FIG. 4 is a side elevational view of FIG. 3 shown rotated 45 degrees;

FIG. 5 is a top plan view of FIG. 2;

FIG. 6 is a bottom plan view of FIG. 2;

FIG. 7 is a perspective view of an alternate embodiment of the design shown in FIG. 1; and

FIG. 8 is a perspective view of a second embodiment of the design shown in FIG. 1.