Variable Weighted Arrow Tip with Threaded Insert

Solution Overview

Problem

Existing archery technologies do not provide a means to quickly change the weight of an arrow tip, limiting versatility and performance.

Innovation Solution

A variable weighted arrow tip design that allows for quick substitution of a weighted insert, featuring a field point with a threaded tap and a weighted insert with a threaded projection and o-ring groove, ensuring secure attachment and vibration prevention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a traditional fixed-weight arrow tip is used, then the structure is simple and manufacturing is easy, but the versatility and ability to adjust weight for different conditions is limited

Engineering Contradiction:

Improveweight adjustment capabilityVSAvoidarrow tip structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The arrow tip is divided into two separate components: a field point and a weighted insert. The field point contains a threaded tap for attachment, while the weighted insert contains the weight and drive cavity. This segmentation allows the weight to be changed by simply replacing the insert while keeping the field point, achieving weight adjustment capability without requiring complete redesign of the arrow tip structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The arrow tip system transitions from a static fixed-weight design to a dynamic adjustable-weight design. The threaded connection between the field point and weighted insert allows for easy assembly and disassembly, enabling the weight to be changed based on different shooting conditions while maintaining a relatively simple overall structure.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If a variable weighted arrow tip with threaded connection is used, then weight adjustment is enabled, but the risk of vibration and loosening during firing increases

Engineering Contradiction:

Improveweight adjustment capabilityVSAvoidattachment security during firing

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

An O-ring seal is incorporated into the weighted insert to create a flexible sealing element between the insert and field point. This flexible seal prevents vibration and loosening of the threaded connection during firing and impact, maintaining attachment security while enabling weight adjustment capability.

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

The O-ring seal provides beforehand cushioning against vibration and loosening by creating a flexible barrier that absorbs vibrational energy before it can cause the threaded connection to loosen during firing and impact.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Reliability

If a weighted insert with O-ring seal is used, then vibration and loosening are prevented, but the manufacturing complexity increases

Engineering Contradiction:

Improveattachment security during firingVSAvoidarrow tip assembly

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The arrow tip is divided into two separate components: a field point and a weighted insert. The field point contains a threaded tap for attachment, while the weighted insert contains the weight and drive cavity. This segmentation allows the weight to be changed by simply replacing the insert while keeping the field point, achieving weight adjustment capability without requiring complete redesign of the arrow tip structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

An O-ring seal is incorporated into the weighted insert to create a flexible sealing element between the insert and field point. This flexible seal prevents vibration and loosening of the threaded connection during firing and impact, maintaining attachment security while enabling weight adjustment capability.

Inventive Principle:

Principle #30Flexible shells and thin films

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables rapid weight adjustments of the arrow tip, enhancing versatility and performance by maintaining secure attachment during firing and impact.

Implementation Method 1

The threaded projection is sized to be threadably received by the threaded tap

Methodology Applied

Scientific EffectThreading: Screw

Implementation Method 2

The at least one o-ring prevents vibration and loosening of the weighted insert inside the field point during firing and impact

Methodology Applied

Scientific EffectVibration damping: Damping

Data Source

PatentUS9915510B1Variable weighted arrow tip

Publication Date: 2018.03.13 HUANG DORGE O

AI summary

A variable weighted arrow tip includes a field point and a weighted insert. The field point preferably includes a field point tip, an insert bore, a threaded tap, a first shaft diameter and a second shaft diameter. The field point tip is formed on one end of the field point and the insert bore with the threaded tap are formed in an opposing end thereof. The first and second shaft diameters are formed on a middle and substantially an end opposite the field point. The first and second shaft diameters are sized to receive first and second inner diameters of a double walled arrow shaft. The weighted insert includes a bore diameter and a threaded projection. The threaded projection is threadably received by the threaded tap. At least one o-ring groove is retained on the bore diameter. A drive cavity is formed in an end opposite the threaded projection.