| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To smoothly go up and down the stairs and to positively prevent a fall. <P>SOLUTION: This staircase has a bend section 11 with treads 12A-12F arranged changing directions every predetermined angle and narrowed inward in width at the bend part 11. A projecting handrail 30 projected outward to surround a steep gradient part S of the treads 12A-12F where the staircase has a steep gradient by narrowing the width of the treads is provided inside the bend section 11. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
