Turbine-tip arrowhead

a turbine-tip arrowhead and arrow head technology, applied in the field of arrowheads, can solve the problems of additional damage caused by rifling, and achieve the effect of excellent rotation of the arrow shaft and no large amount of aerodynamic drag

Inactive Publication Date: 2006-04-20
KUHN TODD A
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008] The present invention is a turbine tip arrowhead, used either strictly as a field point or as the forwardmost tip in concert with any prior art broadhead assembly. The key feature of this turbine tip arrowhead is the geometry, which includes a tapered tip and a plurality of helical rifles, consisting of either grooves or ridges, beginning at the tip of the field point and spiraling back towards the aft end. All rifles spiral in the same rotational direction giving the appearance of a turbine. This turbine tip design provides excellent rotation of the arrow shaft duri...

Problems solved by technology

The rifling also inflicts additional dam...

Method used

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Examples

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Embodiment Construction

[0016] With reference to FIG. 1, field point 1 of this invention comprises a typically cylindrical body 2 with a maximum diameter approximately equal to the maximum diameter of an arrow shaft. Body 2 is typically symmetrical about a longitudinal axis. A portion of body 2 tapers to a point 3 at one end. A plurality of helical rifles 4, consisting of either grooves or ridges, begin at point 3 of the field point 1 and spiral down the longitudinal axis of body 2. Rifles 4 may spiral down the entire axial length of body 2 or may terminate partially down a portion of the axial length of body 2. All rifles 4 spiral in the same rotational direction giving the appearance of a turbine. In the preferred embodiment, rifles 4 are placed close together around body 2 so that they contact each other down their entire helical length.

[0017] In the preferred embodiment there are between about three and about ten rifles 4 located symmetrically about the longitudinal axis of body 2. There are optimally...

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PUM

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Abstract

The present invention is a turbine tip arrowhead, used either strictly as a field point or as the forwardmost tip in conjunction with any prior art broadhead assembly. The key feature of this turbine tip is the geometry, which includes a tapered tip and a plurality of helical rifles, consisting of either grooves or ridges, beginning at the tip of the field point and spiraling back towards the aft end. All rifles spiral in the same rotational direction giving the appearance of a turbine. This turbine tip design provides excellent rotation of the arrow shaft during flight without producing a large amount of aerodynamic drag. The invention is compatible with all contemporary arrow shafts and with all contemporary broadhead assemblies. A novel broadhead assembly utilizing the turbine tip and deployable blades to produce axial rotation is also described.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to the field of archery. Specifically, the invention relates to arrowheads found on arrow devices. [0003] 2. Description of the Prior Art [0004] Arrowheads and their associated aerodynamics are a key element for predictable flight of arrow assemblies. Prior art arrowheads can be broadly divided into two groups: those with little or no aerodynamic effect, such as the common field point, and those that do have a pronounced aerodynamic effect, whether intended or not, such as broadhead arrowheads. [0005] Field point arrowheads are very simple devices that are commonly used for target practice. Field point arrowheads taper from a maximum diameter, equal to approximately the diameter of the arrow shaft, down to a point at the forwardmost end. Some variations of the simple field point geometry include three or four scallops in the field point surface. However these scallops are meant to provi...

Claims

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Application Information

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IPC IPC(8): A63B65/02
CPCF42B6/08
Inventor KUHN, TODD A.
Owner KUHN TODD A
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