| 摘要 |
A portable crane that can be easily set up on the rooftop and safely and easily lift objects to the rooftop is disclosed. The portable crane comprises of a support structure that will support the portable crane near the edge of a rooftop with a boom pivotally connected to a support column affixed to the support structure and a cable extending between the free end of the boom to lift the load and a means to pull the cable such as a winch. The support structure will stabilize and support the portable crane and the load it is lifting on the edge of a rooftop. |
