Archery Bow Press with Segmented Limb Supports

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Solution Overview

Problem

Current archery bow presses are inadequate for safely and effectively pressing a wide variety of bows, particularly those with preloaded past parallel limbs, due to limited bow limb contacts, structural weakness, and inability to support stiff limbs without distorting or causing the bow to slip out of the press.

Innovation Solution

A dynamic V-shaped bow press with collectively connected bow limb supports, featuring spaced limb contacts at an acute angle corresponding to the bow's radius of curvature, and a drive mechanism with pivot arms and spur gears to securely hold and press bows with stiff limbs, including those with past parallel limbs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional bow presses are used with limited bow limb contacts, then the press structure remains simple, but the press cannot securely hold bows with preloaded past parallel limbs causing distortion and slipping

Engineering Contradiction:

Improvebow holding securityVSAvoidpress structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The bow limb contact is divided into multiple segmented contacts arranged along the limb curvature. Each segment can independently engage with the bow limb at different positions, providing distributed support that prevents distortion and slipping while maintaining structural manageability

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The bow limb contacts are arranged in a three-dimensional configuration that follows the natural curvature of the bow limb. This spatial arrangement allows multiple contact points to engage the limb simultaneously along its curved surface, providing secure holding without requiring excessive structural complexity

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Adaptability or versatility

If bow limb contacts are increased to securely hold various bow types, then bow pressing reliability improves, but the device complexity and setup time increase

Engineering Contradiction:

Improvebow type accommodationVSAvoidnumber of bow limb contacts

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The bow limb contacts are designed with a universal configuration that can accommodate multiple bow types including traditional bows, compound bows, and preloaded past parallel limb bows. The contacts are arranged to work effectively with various limb geometries without requiring separate specialized contacts for each bow type

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The bow limb contacts are positioned to dynamically adapt to the specific bow being pressed. The arrangement allows the contacts to naturally align with the bow limb curvature during the pressing operation, providing optimal engagement for different bow types without requiring complex adjustment mechanisms

Inventive Principle:

Principle #15Dynamics

3Productivity

If force is applied to preloaded past parallel limbs with traditional presses, then the bow can be pressed, but the limbs distort or flatten at contact points causing excess stress

Engineering Contradiction:

Improvepressing effectivenessVSAvoidbow limb distortion and stress

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The pressing force is segmented and distributed across multiple contact points along the bow limb curvature. This distributed loading prevents excessive stress concentration at any single contact point, eliminating limb distortion and flattening while maintaining effective pressing capability

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The bow limb contacts are arranged to conform to the natural curvature of the bow limb. This curved arrangement allows the pressing force to be applied along the arc of the limb rather than at discrete flat contact points, distributing stress evenly and preventing distortion

Inventive Principle:

Principle #14Spheroidality (Curvature)

4Adaptability or versatility

If bow limb contacts are made adjustable to fit different bow curvatures, then versatility improves, but the setup time and skill level required increase

Engineering Contradiction:

Improvecurvature accommodationVSAvoidsetup time

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The bow limb contacts are configured with a universal geometric arrangement that naturally adapts to different bow curvatures. This standardized configuration eliminates the need for complex adjustments or repositioning when changing between different bow types, reducing setup time and skill requirements while maintaining versatility

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS9574842B2Archery bow press and method for compressing an archery bow using collectively connected bow limb supports

Publication Date: 2017.02.21 TULPA KEVIN R

AI summary

An archery bow/crossbow press and method provides operation to various bow designs including bows with past parallel limbs or having limbs with sharp curvatures using collectively connected bow limb supports to engage the outer face of a bow limb for compression; each bow limb support configured with at least one upper and at least one lower support arm wherein each support arm comprises bow limb contact areas that may include various shapes adaptable to engage a bow limb or limb components; each support arm may be positioned against a bow limb independently or collectively with each other; and, when the bow limb supports are positioned collectively on the bow they may be the sole contact of the bow press during the pressing operation.