Patent ID: 8656971

Claim:
A combination wheel and tire assembly comprising: a circular wheel having first and second discs and a rim extending in an axial direction between the first and second discs; a circular tire having a tread and first and second sidewalls, the tread having an exterior tread surface and an opposite inner tread surface and connecting and extending axially between the first and second sidewalls circumferentially around the circular tire, and the first and second sidewalls seated in the rim adjacent respective first and second rim flanges on the rim; an interior wall between and spaced from the first and second sidewalls and extending in a radial direction from the inner tread surface to the rim; a first inflatable air chamber extending circumferentially around and within the circular tire and defined within the first sidewall and the inner tread surface on one side of the interior wall and radially outward of the rim; a second inflatable air chamber extending circumferentially around and within the circular tire and defined within the second sidewall and the inner tread surface on the other side of the interior wall and radially outward of the rim; and first and second spacers in the first and second air chambers, respectively, adjacent the rim, the first and second spacers having a circular shape and maintaining the spacing of the first sidewall, the interior wall, and the second sidewall relative to one another.