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US 10,662,971 B2Granted
Phi fan
OwnerGilbert H. Krahninventor
Life of this patent
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Abstract
A fluid displacement device including a center shaft and a plurality of vanes. Each of the plurality of vanes has an inner edge, an outer edge, and a spiraling edge disposed between the inner edge and the outer edge. The spiraling edge of each of the plurality of vanes follows a Fibonacci spiral based on circular arcs traced through a Fibonacci tiling comprising squares having side lengths that are a multiple of at least five successive Fibonacci numbers.
Claims16
A fluid displacement device, comprising:
- a center shaft;
- a plurality of vanes, each of the plurality of vanes having an inner edge, an outer edge, and a spiraling edge disposed between the inner edge and the outer edge;
- wherein the spiraling edge of each of the plurality of vanes and the center shaft define a Fibonacci spiral through at least five successive Fibonacci numbers;
- and
- wherein the center shaft defines an axis, wherein the outer sides of each of the plurality of vanes define an arc of a vesica piscis that intersects the axis of the center shaft.
2 more elements
Dependencies are inferred from the claim text.