| 摘要 |
PROBLEM TO BE SOLVED: To provide a stool which can be used when one can not sit on a seat while commuting by train for a long distance. SOLUTION: The stool is constituted in a cylindrical bag shape as a whole, has a size so as to be put under a crotch of a standing person, and is used being filled with air. An inner bag is made of a polyvinyl chloride or a rubber, an outer bag is made of cloths, and a check valve is secured to an air filling port. The shape of the stool is kept by the power relationship by the pressure of the inner air and the outer bag with little expansion. COPYRIGHT: (C)2007,JPO&INPIT
|
