| 摘要 |
<p>A container (12, 112) with an inside surface and a mass (10, 110) mounted for oscillation in the container (12, 112) with a pair of bellows (150, 180) in the container (12, 112) each having a bias spring (156, 186) therein and a removable end (146, 172) to expose the interior of the bellows (150, 180) to exchange the spring (156, 186) for easy tuning of the damping characteristics and a plurality of balls (132, 134, 136, 138), one each positioned in a plurality of troughs (122, 124, 126, 128) around the periphery of the mass (10, 110) proximate the ends there to bear against the inside surface so as to provide low friction oscillation of the mass (10, 110) in the container (12, 112).</p> |
