| 摘要 |
<p>A hollow web structure formed of telescopic segments that may be expanded to enclose an occupied sleeping bag for protection of the sleeper. Each segment of the structure is formed as a D-shaped section and fitted with latching means for retaining in the extended position. A door is rotatably fastened to one end segment and fitted with internal latching means. The bottom of each segment is fitted with angle brackets for fastening to the ground or to a floor.</p> |
