US 12,117,261 B2 · Archery vane angle tool

Abstract

An aerodynamic element (often referred to as a vane or fletching) that is operatively coupled to the nock end (the back) of an arrow or similar projectile at an angle to the axis of the projectile is known to stabilize flight. This angle, known as offset or helical, in combination with the airflow generates both low and high pressures on different sides of the vane. This pressure difference imparts a torque around the projectiles primary axis which is one component to stabilizing the arrow's flight. Knowing the exact angle of this offset or helical of the vane to the axis of the arrow is critical to create an arrow with optimal performance. The illustrative tool allows the user to very accurately and precisely adjust a fletching jig to exactly the desired angle, as well as being able to setup multiple jigs with exactly the same setup.

Claims15

Dependent claims

An arrow wrap graphically showing offset angles configured to be used on an arrow shaft or simulated arrow shaft, the arrow wrap comprising:

a substrate extending along a longitudinal axis between a front end and a rear end;
a line segment supported on the substrate that defines a 0 degree line extending co-axial to the longitudinal axis of the substrate and parallel to a longitudinal axis of an arrow shaft;
a base line that is perpendicular to the 0 degree line and the longitudinal axis that intersects the 0 degree line at an origin point a predetermined distance from the rear end of the substrate;
a plurality of alignment lines spaced apart from each other in a plurality of predetermined angles in at least one left offset and right offset, or helical fletching directions that originate at the origin point;
and
indexing marks oriented around the rear end of the substrate.

3 more elements

A method of aligning a vane on an arrow shaft, the method comprising the steps of:

providing a simulated arrow shaft and a nock;
referencing a parting line of the nock;
rotating the nock clockwise about a longitudinal axis of the simulated arrow shaft;
providing a vane angle tool;
providing a jig including a clamp;
placing the vane angle tool within the jig;
placing a vane in the clamp to use as a straight edge;
adjusting the vane up and down in the clamp until a corner aligns with a base line of the vane angle tool;
ensuring that a back and a front of the vane are be able to touch the simulated arrow shaft when pressed down;
rotating the nock clockwise about the longitudinal axis of the simulated arrow shaft if the front of the vane does not touch the simulated arrow shaft;
loosening angle adjustment screws on the jig and adjust the jig until a corner of the vane is proximate to an origin point of the vane angle tool, and the front of the vane is at a desired angle;
retightening the angle adjustment screws on the jig;
and
removing the vane angle tool.

11 more elements

Dependencies are inferred from the claim text.

Archery vane angle tool

Life of this patent

Archery vane angle tool

Life of this patent

Abstract

Claims15