US Patent 7452280 Gaming machine with common top box substructure

A gaming machine for conducting a wagering game includes a game display and a top box display. The game display is for displaying the wagering game. The top box display includes a standard substructure for attaching subassemblies. The substructure contains fixed connection points allowing subassemblies to be developed in a fashion consistent with the substructure, thus simplifying the ability to swap components and reducing the dependence on unique internal part designs.