| CPC B66F 7/08 (2013.01) [B66F 7/0666 (2013.01); B66F 11/042 (2013.01); B66F 17/006 (2013.01); B66D 3/18 (2013.01); B66F 7/0625 (2013.01); B66F 2700/09 (2013.01)] | 12 Claims |
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1. A lifting system comprising:
a lift assist device moveably coupled to and on a first track and a second track, the lift assist device comprising an arm coupled to a mast, a base coupled to the mast, four wheels coupled to the base and configured to roll along the first track and the second track, and four plates adjacent to the four wheels;
a lift coupled to and configured to raise the first track and the second track; and
a drive system coupled within the base of the lift assist device, wherein the drive system is configured to move the lift assist device along the first track and the second track;
wherein the four wheels are configured to roll on top of the first track and the second track while bearing an entire weight of the lift assist device; and
wherein each wheel of the four wheels comprises a recess extending around an outer circumference of each wheel, the recess configured to receive one of the first track or the second track; and
wherein each wheel is adjacent to a plate of the four plates, each plate extending one of below or level with an adjacent wheel.
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