Patent ID: 6863489

Claim:
A dolly apparatus for loading and transporting a container on a surface, comprising: a generally U-shaped main frame having a back support member supported by a first wheel set and mechanically coupled to opposed side members that form an open end of the main frame through which the container can be loaded; a pair of bridge hooks attached to the opposed side members and protruding from the open end of the main frame; and an elongated roller frame having opposed ends supported by a second wheel set, the opposed ends including receiver notches that are aligned to receive the bridge hooks protruding from the main frame, the roller frame being rotatable from a bridge hook receiving angle to a final angle and further including a first fulcrum point that contacts the surface when the roller frame is at the bridge hook receiving angle, a second fulcrum point that contacts the surface when the roller frame is at an intermediate angle between the bridge hook receiving angle and the final angle, and a third fulcrum point that contacts the surface when the roller frame is between the intermediate angle and the final angle, for providing stable attachment of the roller frame to the main frame and thereby support by the first and second wheel sets of the dolly apparatus and any container loaded thereon.