Tank base

FIG. 1 is an exploded top plan view of a tank base showing our design, an exploded bottom plan view being a mirror image of the exploded top plan view;

FIG. 2 is a top plan view, the bottom plan view being a mirror image of the top plan view thereof;

FIG. 3 is an exploded top perspective view thereof;

FIG. 4 is an exploded front side view, an exploded rear side view being a mirror image thereof;

FIG. 5 is an in-use front side view with a tank shown in broken line thereof;

FIG. 6 is an exploded top plan view of a second embodiment of a tank base showing our design; an exploded bottom plan view being a mirror image of the exploded top plan view;

FIG. 7 is a top plan view, the bottom plan view being a mirror image thereof;

FIG. 8 is an exploded top perspective view thereof;

FIG. 9 is an exploded front side view, an exploded rear side view being a mirror image thereof;

FIG. 10 is an in-use front side view with a tank shown in broken line thereof;

FIG. 11 is an exploded top plan view of a third embodiment of a tank base showing our design; an exploded bottom plan view being a mirror image of the exploded top plan view;

FIG. 12 is a top plan view, the bottom plan view being a mirror image thereof;

FIG. 13 is an exploded perspective view thereof;

FIG. 14 is an exploded front side view, an exploded rear side view being a mirror image thereof;

FIG. 15 is an in-use front side view with a tank shown in broken line thereof;

FIG. 16 is an exploded top plan view of a fourth embodiment of a tank base showing our design; an exploded bottom plan view being a mirror image of the exploded top plan view;

FIG. 17 is a top plan view, the bottom plan view being a mirror image thereof;

FIG. 18 is an exploded top perspective view thereof;

FIG. 19 is an exploded front side view, an exploded rear side view being a mirror image thereof; and,

FIG. 20 is an in-use front side view with a tank shown in broken line thereof.

The broken line showing of the tank in FIGS. 5, 10, 15 and 20 is for the purpose of illustrating environmental structure and forms no part of the claimed design.