Driving device for raising or lowering an airfoil

Details Driving device for raising or lowering an airfoil Driving device for raising or lowering an airfoil

2006-01-06

2008-10-28

Look, Edward (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Working member foldable, pivotable or collapsible to non-use...

Reexamination Certificate

active

07442009

ABSTRACT:
A wind turbine assembly with a driving device for raising and lowering a wind turbine between a lower end and an upper end of a wind turbine tower comprises a guide member extending longitudinally along the outer surface of the tower, a sleeve member coupled to the wind turbine, and means for raising and lowering the sleeve member between the upper end and the lower end of the tower along the guide member. The sleeve member has an inner diameter that is larger than an outer diameter of the tower, and is slidably coupled to the tower. The sleeve member also includes a slot configured to engage with the guide member.

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Search Report and Written Opinion for PCT/US2007/00416; filed Jan. 5, 2007.

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