Patent ID: 7942244
Filing Date: 2011-05-17
Classification: B66B,B66F,E04G

Abstract:
1. A modular lifting assembly comprising: a first rack mast, a platform capable of moving vertically along the first rack mast; a first power unit mounted onto the first rack mast and controlling a vertical movement of the platform along the first rack mast, the first power unit comprising a plurality of modular elements, the modular elements including: wherein the lower surface of the upper roller box is held adjacent the upper surface of the upper side of the first motor block with a plurality of upper fasteners inserted through the coinciding plurality of holes of the lower side of the upper roller box and the upper side of the first motor block such that the upper roller box is removably interlocked with the first motor block, and an upper surface of the lower roller box is held adjacent the lower surface of the lower side of the first motor block with a plurality of lower fasteners inserted through a coinciding plurality of holes of an upper side of the lower roller box and the lower side of the first motor block such that the lower roller box is also removably interlocked with the first motor block.