| 摘要 |
A protective case for a retractable item, such as a magnifier or digital media. The case is a hollow shell bisected from end to end to form two halves. At each end of each half there is a pivotal hinge. The hinges at one end join the halves mutually. The hinges at the other end support two arms separately. The two arms at their ends support the item mutually via a pivotal hinge. The case halves may be affected to remain apart by a spring and to remain joined by a releasable hook. To use the item, the halves are parted, the arms extend the item, and the halves are re-joined. To protect the item, the halves are parted, the arms retract the item, and the halves are re-joined. |
