| 摘要 |
<p>This invention describes an elevation device for an elevated support surface (550) comprising a body; said body comprises a first plate member (101, 801) and a second plate member (221, 921), said plate members arranged substantially perpendicular to each other, where said first plate member comprises a first lower edge (107, 109, 113, 865), a first upper edge (103, 803) and two first sides (111, 811) connecting said first lower edge and said first upper edge, and where said second plate member comprises a second lower edge (227, 923), a second upper edge and two second sides (225, 925) connecting said second lower edge and said second upper edge, and where said second lower edge of said second plate member extend to at least a section of the first lower edge of said first plate member.</p> |
