| 摘要 |
<p>The self-supporting mattress is lightweight, easy to handle and has a cover which can be replaced. The spring suspension of the bed is made up of an underneath sprung section (14). The underneath spring section (14) is flat and is on a level with the mattress frame (13), and a top sprung section ( 15) which is placed on it and which, together with the underneath section (14) and the frame (13), is covered by the cover (18). The cover (18) has strips (28) on its free edges (27) which are inserted into pockets (26) on the frame (13).</p> |
