| 摘要 |
An apparatus for opening and closing a top bin lid (24) from below such tha t, when in the fully opened position, the lid (24) will not extend above the plane of the opening. The apparatus utilizes an elongated lever arm (32) pivotally mounte d on the pivot axis (28) of the bin lid (24). A flexible linkage, such as a chain (34) extends from below, over the lever arm (32) which holds the lid (24) in the closed position until the chain is pulled from below. After the latch (30) is released, further drawing of the chain will pivot the lid and arm about their common pivot axis (28) until the arm (32) is obstructed from further movement by the bin (10). Continued pulling of the chain will draw he lid toward the lever arm against spring pressure unti l the lid (24) has been pivoted approximately 180.degree. from its closed position. Controlled re- lease of the chain will cause the spring pressure to move the lid over the vertical plane of the pivot axis and thereafter the force of the spring and gravity will return the lid and latch back to the closed position. The lever arm includes a lid engage- ment tab which returns the lever arm to its upwardly extending position when the lid closes.
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