| 摘要 |
<p>Appts. comprises a bowl or container (8) which is reciprocated vertically, pref. by an electromagnet (4) having a movable core (6) attached to the bowl which is resiliently suspended (2) by members which convert bowl reciprocation into partial rotary motion. Pref. the suspension members are inclined resilient straps (2) connecting the bowl (8) to a support base.</p> |
