An Unusual Air-Umbrella
The Chinese engineers have developed an unusual Air Umbrella - without a traditional dome, and in a form of a big lantern. It will protect from a rain by air streams which will play a role of a dome. These streams of air will take raindrops aside. The umbrella is fed with a special battery occupying the most part of the device. There are three types of this umbrella. The length of the Air-Umbrella-a is 30 centimetres, weighs 0,5 kgs, time of its independent work makes about a quarter of an hour. Air Umbrella-b is 20 centimetres longer, weighs 300 g more and it is capable to work twice longer. In model Air Umbrella-c in comparison with the previous there is a possibility to increase the length of the handle for 80 centimetres, and it weighs 850g.