PROBLEM TO BE SOLVED: To solve such a problem that a conventional safety belt only to be put around a user's waist puts all his/her weight on his/her waist, which can lead to backache.;SOLUTION: The safety belt put around the user's waist is suspended from his/her shoulders with a band so as not to strain his/her waist.;COPYRIGHT: (C)2010,JPO&INPIT
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