US Patent 10160470 Market trolley

A personal shopping cart, or trolley, to be used to transport purchased items, includes a wheeled base, a handle that extends and retracts, and multiple nesting bins or containers. The wheels and handle are such that the trolley can be easily pulled or pushed. The bins are attached to a frame allowing different vertical positions, enabling the bins to either nest into each other (for storage, minimizing its size), or to extend vertically for carrying merchandise. All bins, with the exception of the bottom bin, are removable from the frame.