| 摘要 |
<p>There is provided a new and useful shock absorbing support post for a seat comprising a tubular member (12) having top (14) and bottom (16) ends, shock absorbing means (22) within the tubular member (12), an elongated tubular stem (36) within and freely slidable relative to the tubular member (12), an upper end of the stem extending outwardly of the tubular member, a first centering slider (38) within the tubular member (12), the slider (38) engaging on a lower side thereof a top of the shock absorbing means (22) and engaging on the top thereof the bottom of the stem (36), a second centering slider (40) within the tubular member (12) adjacent the top end (14) thereof and through which the stem (36) passes, whereby the first (38) and second (40) sliders substantially prevent contact between the stem (36) and the tubular member (12), and a pair of longitudinally extending slots (42) in opposite sides of the stem (36) and a mating keypin (46) passing through the slots (42) and through opposite sides of the tubular member (12), and wherein the keypin (46) and slots (42) are positioned such that a lower end of the slots (42) brings up against the keypin (46) to thereby prevent the stem (36) from exiting the tubular member (12) and to maintain in combination with the shock absorber (22) a predetermined resting force on the shock absorber (22).</p> |
