A jack and dolly assembly provides power-assisted lifting and moving capabilities using a single power source, according to an embodiment. In some embodiments a first shaft is used for lifting and lowering an object, and a second shaft is used for causing the jack and dolly assembly to move on a generally horizontal surface. In some embodiments the first and second shafts may selectively move or rotate independently from one another while being powered by the single power source. In some embodiments an inner and outer shaft arrangement is provided, so that the outer shaft has a hollow interior and at least a portion of the inner shaft is positioned within the hollow interior.
JACK AND DOLLY ASSEMBLY AND METHOD OF OPERATION
2018-08-16
Patent
Electronic Resource
English