| 摘要 |
<p>An access device (1) adapted to provide access between a substrate surface (2) and an elevated surface (3). The access device (1) includes a mounting (4), for securement of said device (1) below an extremity of said elevated surface (3), a first ladder member (5), a first end (9) of which is pivotally attached to an upper end (11) of said mounting (4), a second ladder member (6), a first end (12) of which is pivotally attached to a second end (13) of said first ladder member (5), drive means (7), operatively connected between said mounting (4) and said first ladder member (5), to control the movement of said first ladder member (5) between an access position and a storage position, and, a guide arm (8), operatively connected between a lower end of said mounting (4) and said second ladder member (6), to guide the movement of said second ladder member (6) as said drive means (7) moves said first ladder member (5). User operation of said drive means (7) controls the operation of said access device (1) between an access position and a storage position. In the access position, each of said first (5) and second (6) ladder members are substantially coaligned and extend angularly outwardly and downwardly from said elevated surface (3). In the storage position, each of said first (5) and second (6) ladder means are retracted in a substantially vertically disposed manner adjacent to said mounting (4), said second ladder member (6) being substantially inverted relative to said first ladder member (5).</p> |
