| 摘要 |
<p>Device, without springs or contribution of external energy, for the timed automatic return of the cover of containers and other elements with reciprocal movement, which may be applied directly to elements with a rocking movement or indirectly to elements with any type of movement. Said device may be used in the automatic closure of the lids of rubbish containers, waste-paper bins, various receptacles and self-service display units in the food industry.</p> |
