Patent ID: 8418810
Filing Date: 2013-04-16
Classification: E04G

Abstract:
1. A collapsible man-lift for movement through the openings in the platforms or decks within the hollow tower portion of a wind turbine, said collapsible man-lift comprising: a support frame assembly including an angled support beam sub-assembly and a floor support sub-assembly; a foldable floor assembly positioned over and supported by said floor support sub-assembly of said support frame assembly; and a collapsible cage assembly attached to said support frame assembly; whereby, the collapsible man-lift may be reduced in size along a depth dimension to enable passage of the collapsible man-lift through the openings in the platforms or decks with a hollow tower portion of a wind turbine when the collapsible man-lift is in its collapsed position, wherein said angle support beam sub-assembly is formed substantially in the shape of an isosceles triangle formed from two frame legs of substantially equal length affixed to a support beam at their base and joined together in a junction section at their tops.