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US 3,995,170 AGranted
Wind energy conversion device
OwnerClinton L. Graybillinventor
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Abstract
A wind energy conversion device for converting directional wind force to torque along on a vertical rotational axis. The device includes a plurality of flexible vanes mounted to a framework for rotation therewith about a vertical axis. The vanes are mounted to upright posts on the framework. Axial vane side edges extend to opposite radial sides of the posts and are connected in a specific manner to the frame in order to produce a positive effect on rotation of the device in a prescribed direction, in response to wind currents.
Claims10
A wind energy conversion device, comprising:
- a central supporting framework;
- an upright shaft journalled in the framework for free rotation about a vertical axis;
- a secondary frame centered on the shaft and mounted thereto for rotation therewith, with an outer periphery spaced radially from the shaft axis;
- a plurality of axial posts mounted to the frame periphery parallel with the shaft;
- a flexible vane mounted to each post and including an areal surface with inward and outward side edges extending from opposite sides of the post forming two vane sections;
- and
- connecting means extending between the vane edges to the secondary frame for holding the areal surface of the vanes on a leeward side of the frame against the wind as the frame rotates about the shaft axis and for allowing the vanes to fold over the posts with the vane sections overlapping each other on a windward side of the frame as the frame rotates about the shaft axis.
4 more elements
Dependencies are inferred from the claim text.