US Patent 9227645 Modular customizable cart

A modular cart that includes a main cart, a first modular cart frame, and a second modular cart frame is described. The main cart further includes a handle end with a first base component that is mechanically coupled to at least one caster. The main cart also includes a first bar disposed on a distal end of the first base component that extends to a second base component, in which the first bar is orthogonal to the second base component and the first base component. A first bay perimeter is bounded by the first base component, the first bar and the second base component. The main cart further includes a second bay perimeter is bounded by a second base component, a second bar and a third base component.