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US 2001/0041629 A1Published application
Sports device having a low drag shaft
AssigneeJunichi Hirata
InventorJUNICHI HIRATA
Life of this patent
Estimating the term…
Abstract
A shaft adapted to move through a fluid, wherein the shaft has a surface, diameter, and length, and wherein the shaft comprises at least two ridges extending along at least a portion of the length, such that fluid resistance encountered by the shaft as it is moved through the fluid is reduced.
Claims13
A shaft adapted to move through a fluid, wherein the shaft has a surface, a length, and at least two ridges on the surface of the shaft extending along at least a portion of the length of the shaft, such that fluid resistance encountered by the shaft as it is moved through the fluid is reduced.
Dependencies are inferred from the claim text.