| 摘要 |
<p>An elevator assembly (10) comprising a support platform (12) mounted on first and second legs (14, 16) and a control means (18). The first leg (14) includes first primary and secondary length adjustable members (20, 22), which members (20, 22) are secured together and arranged so that they are axially offset and extend in substantially opposite directions. The second leg (16) includes second primary and secondary length adjustable members (32, 34) which members (32, 34) are secured together and arranged so that they are axially offset and extend in substantially opposite directions. The first primary length adjustable member (20) is operably connected to both the control means (18) and the second secondary length adjustable member (34). The second primary length adjustable member (32) is operably connected to both the control means (18) and the first secondary length adjustable member (22). On operation of the control means (18), the primary length adjustable members (20, 32) extend or retract, causing the secondary length adjustable members (22, 34) to extend or retract respectively, to raise or lower the support platform (12).</p> |
