Can reload batteries more easily and quickly (similar with enbloc clip for M1 Garand rifle). More 250 times cheaper than 1.5V Li-FeS2 disposable battery, because it can recharge and reused more 500 times. Can supply 2 times more electric energy and 2 times more less weight compared with Ni-MH batter.....
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Innovative Staircase Integrated Elevator Device, which assists the elderly orpeople with disabilities to comfortably and painlessly ascend or descend any given number of stairs without bending their knees. Consists of modular step elevator units, designed to fit any staircase (of any shape, size and.....
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This Mechanism can be designed, point by point, considering the differences between Professional & Amateur Cyclist, between Man & Woman, between Child & Adult, between Transportation & Exercise, even between the Left & the Right Foot of the same Person, or between the Left & .....
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