Patent ID: 7093840

Claim:
A multi-purpose combination ladder/cart assembly, comprising: a first frame having side rails and support members disposed between said side rails; a second frame pivotally connected to said first frame, said second frame having side rails and support members disposed between said side rails of said second frame; said first and second frames being pivotally movable with respect to each other to configure said assembly into at least one type of ladder configuration; said first and second frames being further pivotally movable with respect to each other into a closed position to configure said assembly into a cart configuration; and a set of wheels connecting to the first frame capable of being arranged in a variety of possible configurations in order to provide a variably selectable center of gravity for said assembly in the cart configuration, wherein the center of gravity of said assembly in the cart configuration is capable of being changed by changing the configuration of the set of wheels connected to said first frame, wherein each of the possible configurations of said set of wheels provides said assembly with different traveling height and angle characteristics in the cart configuration, and wherein said set of wheels includes a first set of smaller wheels attached to said first frame and a second set of larger wheels attachable to said first set of smaller wheels, wherein a particular number of said larger wheels are selected to be attached to a respective number of smaller wheels in order to select the desired center of gravity for said cart configuration.