| 摘要 |
<p>Each spring of the chair suspension has a corrugated tubular wall which at its base, ends at a radially outwardly extending peripheral flange, with a slit in the flange extending to the outer periphery of the latter and having the same length as same. The spring suspension also includes a base member with several circular openings through which part of the springs extend, and each opening having a radially slit part whose width equals the thickness of the flange and whose length equals the width of the flange so that the spring can be attached to the base member by the slit and the slit part.</p> |
