Arrow Having Multiple Exterior Diameters and Multiple Interior Diameters

摘要

A cylindrical carbon fiber arrow shaft formed with an exterior surface having single or multiple outside diameters and formed with an axial bore having multiple interior diameters. In a preferred embodiment, the exterior surface of the arrow shaft has an increased external diameter at the nock end and tapers to a smaller external diameter at the tip end. The axial bore has an internal diameter at the nock end corresponding to standard arrows having external diameters of 0.295 inches and tapers to a smaller internal diameter at the tip end. Modifying the length, diameter, and wall thickness of the arrow shaft varies the stiffness of the arrow shaft along the length and shifts the center of gravity along the length of the arrow shaft and as well. Utilizing standard internal diameters, nock and tips may be attached without spacers or inserts, thereby decreasing weight of the arrow significantly.

主权项

1. An arrow comprising:
a cylindrical arrow shaft having an external surface and formed with a nonuniform axial bore; a tip attachable to said tip end of said arrow shaft; a fletching attachable to said exterior surface of said arrow shaft adjacent said nock end; and a nock attachable to said nock end of said arrow shaft.