| 摘要 |
<p>A bird-cage includes an elongated barrel, which has a wall bounding the interior thereof, upper and lower open ends. The upper open end can be detachably closed by a first discrete end closure, which is formed with a first bent portion directed upwardly when the first closure is installed on the barrel in an operative position to increase the interior volume of the container. The first closure is adapted to be inverted with its bent portion directed down and inwardly into the container in a collapsed position. The lower open end can be detachably closed by a second discrete end closure, which is formed with a second bent portion directed downwardly when this closure is installed in the barrel in the operative position to further increase the interior volume of the container. The second closure can also be inverted with its bent portion directed up and inwardly into the interior in the collapsed position.</p> |
