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US 4,375,035 AGranted
Tetrahedral windmill
OwnerTheodore O. Groegerinventor
Life of this patent
Estimating the term…
Abstract
A wind-adjustable air turbine consisting of: 1. a tetrahedral support structure, 2. at least one blade extending into opposite tetrahedral edges, and 3. an axis of rotation extending from the structure's center and movable into any of the edges' centers, whereby the blade's rotation and/or drag is changed.
Claims16
An adjustable reaction turbine comprising:
- (a) a tetrahedral support structure whose opposite edges are of equal length;
- (b) at least one blade extending into opposite edges of said structure;
- (c) an axis of rotation pivotally and/or torsionally attached to said structure's center and extending to a load and (d) adjustable means for moving said axis toward the center of any of the tetrahedral edges, whereby said turbine's speed and/or direction of rotation is changed.
Dependencies are inferred from the claim text.