| 摘要 |
<p>A device (10) for maintaining a tarpaulin (12) in a substantially taut state over a top aperture (14) of a container (16), the tarpaulin being configurable between an extended configuration and a retracted configuration, wherein, in the extended configuration, the tarpaulin substantially covers the top aperture, and in the retracted configuration, the tarpaulin is substantially retracted from the top aperture. The device includes a rod (18) for rolling the tarpaulin therearound when configuring the tarpaulin from the extended configuration to the retracted configuration and for unrolling the tarpaulin therefrom when configuring the tarpaulin from the retracted configuration to the extended configuration, the rod defining a longitudinal axis; and a biasing element (7) mechanically coupled to both the container (16) and the rod (18) for biasing the rod in such a manner so as to maintain the tarpaulin in a substantially taut state when the tarpaulin is being rolled and unrolled respectively onto and from the rod.
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