The small waterproof waist or shoulder bag suitable for use while in the water is very useful for the protection of valuables such as keys, money, mobile phone from theft while swimming, and at the same time it can save the user from drowning since it includes a built in lifejacket with an automatic.....
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sea side resorts, recreation cruising vessels, hotels, travel agents, lifeguard agencies, water sport providers may all benefit from offering the invented "Swimmer waterproof bag for storing valuables, convertible into a life jacket", since they increase the feeling of safety and comfort o.....
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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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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.....
[更多]
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