Wind turbine spars with jointed shear webs

Details Wind turbine spars with jointed shear webs Wind turbine spars with jointed shear webs

2007-09-27

2011-12-13

Look, Edward (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Formed with main spar

C416S230000, C029S889700, C029S889720

Reexamination Certificate

active

08075275

ABSTRACT:
A spar for a wind turbine blade includes at least one shear web extending between pressure and suction sides of the blade; and a joint, arranged substantially midway between ends of the shear web, for sizing the shear web. The joint may include a resilient and/or expandable spacer.

REFERENCES:
patent: 4331495 (1982-05-01), Lackman et al.
patent: 4732542 (1988-03-01), Hahn et al.
patent: 5417549 (1995-05-01), Purse et al.
patent: 5476704 (1995-12-01), Kohler
patent: 6786452 (2004-09-01), Yamashita et al.
patent: 2004/0014080 (2004-01-01), Tanga et al.
patent: 2005/0214122 (2005-09-01), Sorensen et al.
patent: 2008/0219851 (2008-09-01), Althoff et al.
patent: WO 2007048408 (2007-05-01), None
U.S. Department of Energy, National Renewable Energy Laboratory, Publication No. NREL/SR-500-29492 (Apr. 2001) available at www.nrel.gov/docs/fy01osti/29492.pdf.

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