| 摘要 |
Apparatus for lifting or/and lowering objects or, primarily, persons which comprises two interconnected X-frames (4,5) each of which comprises two pivotally connected members and which are arranged in an upright position in spaced parallel relationship, a support (3) supported by the upper ends of the members, and one of two inflatable bags (2,332) arranged to surround the pivotal connections (6) of the frame members so that portions of the bag(s) lie between members, whereby inflation and deflation of the bag(s), respectively, opens the X-frames in scissors-fashion and allows the frames to close in a similar fashion thereby raising and lowering the support. The bag has a central opening through which the frame members extend and a tie (11,12) is provided between portions of the bag at opposite sides of the opening.
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