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U.S. Department of Energy
Office of Scientific and Technical Information

Vertical axis windmill

Patent ·
OSTI ID:6506969
A vertical axis windmill has a blade pivotally connected to a rotatable support structure on an axis passing through its center of gravity which is arranged to lie forward of its aerodynamic center whereby the blade automatically swings outwardly and inwardly when moving on the windward and leeward sides respectively of the axis of rotation of said support means.
Assignee:
Nianbilla Company Limited (China)
Patent Number(s):
US 4435124
OSTI ID:
6506969
Country of Publication:
United States
Language:
English