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US 8,418,810 B2Granted
Collapsible man-lift for use in wind turbine towers
AssigneeBarr Fabication LLC
InventorHugh C. Barr
Life of this patent
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Abstract
A collapsible man-lift for use in the hollow tower portion of a wind turbine includes a support frame assembly, a foldable floor assembly and a collapsible cage assembly. The support frame assembly includes a sub-assembly built in a triangular shape. The foldable floor assembly and the collapsible cage assembly are connected to the triangular sub-assembly portion of the support frame assembly.
Claims11
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.
1 more element
Dependencies are inferred from the claim text.