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If the lifebuoy is not thrown precisely around the drowning people and the drowning people have no strength to get close to the lifebuoy, it does not work at all. How to make the drowning people catch the lifebuoy faster?Expand Lifebuoy can expand the rescue scope. After the lifeguards throw it out, the four handles around the lifebuoy get expanded because of the rotative tension. The expanded handles can increase the number of rescued people and enlarge the rescue scope for more than one time. The drowning people can grasp the lifebuoy faster. They can be rescued safely in less time.
National Taiwan University of Science and Technology
Department of Industrial and Commer
Hong-Wei Lin Hao-Siang Min