US 2018/0003471 A1 · ARROW SHAFT WITH INTERNAL BRACING

Abstract

The present invention is a lightweight archery arrow having an arrow shaft with internal bracing, an arrow tip, and a nock. The arrow shaft with internal bracing is a cylindrical tube having a plurality of ribs formed along the length of the cylindrical tube. The ribs increase the bending stiffness of the cylindrical tube without adding additional thickness and weight. Due to the increased bending stiffness of the cylindrical tube provided by the ribs the wall thickness of the cylindrical tube may be reduced while still maintaining the bending stiffness comparable to that of an arrow shaft having a thicker wall. The decrease in wall thickness and the reduction of material reduces the weight of the arrow shaft providing an arrow shaft with an exterior diameter and bending stiffness comparable to that of a standard arrow shaft, but being lighter in weight.

Claims13

Dependent claims

An arrow shaft comprising:

a cylindrical tube comprising an outside diameter and an inside diameter, and a plurality of ribs formed along the length of the inside diameter of the cylindrical tube.

Dependencies are inferred from the claim text.

Facts

Application

15/639,849Filed 30 Jun 2017

Priority

1 Jul 2016

Published

4 Jan 2018

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

F42B 6/04
Arrows; Crossbow bolts; Harpoons for hand-held spring or air guns: archery arrows
B29C 33/42
Moulds or cores; Details thereof or accessories therefor: characterised by the shape of the moulding surface, e.g. ribs or grooves
B29C 33/424
Characterised by the shape of the moulding surface, e.g. ribs or grooves: moulding surfaces provided with means for marking or patterning
B29C 53/043
Of plates or sheets: using rolls or endless belts

Arrow shaft with internal bracing

Life of this patent

Arrow shaft with internal bracing

Life of this patent

Abstract

Claims13