| 摘要 |
Light weight, hinged, self-closing container covers using springs to self-close are provided. Several cover designs having gates that may be circular or non-circular and may occupy up to almost 100% of the surface of the cover are implemented using springs placed on the exterior of the cover or on the interior of the cover (i.e., inside the container). The dynamics of the gate behavior may be controlled by choosing the properties of the materials from which the springs are comprised. Elastomer springs and combination flex and torsion springs are particularly well suited for comprising the invention and their properties may readily be manipulated to control gate behavior. The gates may be implemented with a toggle action or permanent open action where desired. |
