Turbine-tip arrowhead

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...

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 during flight without producing a large amount of aerodynamic drag. The invention is compatible with all contemporary arrow shafts.

[0009] When used as a replacement for the common field tip-like caps found on prior art broadhead assemblies, the turbine tip of the present invention again provides stabilizing, axial rotation of the arrow regardless of whether or not the broadhead main blades provide any axial rotation themselves. The rifling also inflicts additional damage while augering into the target upon impact. The invention is compatible with all contemporary broadhead assemblies.

Problems solved by technology

The rifling also inflicts additional damage while augering into the target upon impact.

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