| 摘要 |
The present invention features a hoist comprising a primary extension having a circular arrangement and that is helical in shape, or that is formed in the shape of a helix having several coils or laterals. The hoist further comprises a series of supports that comprise a pre-determined length and that dictates the height or extension distance to which the primary extension can extend. The supports are also comprised of a helical shape to allow the laterals of the primary extension to travel thereon once being formed together. Essentially, the primary extension is caused to extend and collapse by rotating the supports in the appropriate direction.
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