Archery Bow Cam Shim Alignment for Fast Shooting Plane Tuning

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing archery bows require cumbersome and time-consuming processes to adjust cam spacing for tuning, often necessitating specialized tools and expertise to modify shooting plane and arrow flight characteristics.

Innovation Solution

The introduction of members with shim portions that can be easily swapped or replaced to vary the spacing of eccentrics or cams relative to the limbs, allowing for quick adjustment of the shooting plane without disassembling the bow.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional cam spacing adjustment methods are used, then cam spacing can be modified to tune shooting plane and arrow flight characteristics, but the process becomes cumbersome and time-consuming requiring specialized tools and expertise

Engineering Contradiction:

Improvecam spacing adjustment capabilityVSAvoidadjustment process simplicity

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The cam assembly is segmented into modular components including the cam, axle, and member with shim portion that can be independently adjusted. The member with shim portion can be removed and replaced with different thickness shims to change cam spacing without affecting other components, enabling easy adjustment while maintaining structural integrity

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system transitions from a fixed cam spacing design to a dynamic adjustable system where the cam spacing can be easily changed by swapping members with different shim portions. This allows the cam assembly to adapt to different shooting conditions and preferences without requiring complex tools or specialized expertise

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If traditional cam spacing adjustment methods are used, then cam spacing can be modified for tuning, but specialized tools and expertise are required

Engineering Contradiction:

Improvetuning capabilityVSAvoidtool and expertise requirement

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The cam assembly is designed to be self-adjusting through the use of members with shim portions that can be easily swapped by the archer themselves. The design eliminates the need for specialized tools or expert knowledge, allowing users to independently tune their bow by simply removing and replacing members with different shim thicknesses

Inventive Principle:

Principle #25Self-service

3Reliability

If cam spacing is adjusted to modify shooting plane, then arrow flight characteristics can be improved, but the adjustment process is time-consuming

Engineering Contradiction:

Improvearrow flight performanceVSAvoidadjustment time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

Multiple members with different shim portion thicknesses are prepared in advance and stored with the cam assembly. When adjustment is needed, the archer simply removes the current member and attaches the pre-prepared member with the appropriate shim thickness, eliminating the need for time-consuming on-site adjustments or complex procedures

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20250362106A1Archery Bow Eccentric Alignment and Related Apparatuses

Publication Date: 2025.11.27 HOYT ARCHERY INC

AI summary

A member for an archery bow having an axle, a limb, and a cam. The member contacts the axle to retain the cam at a location relative to the axle and the limb. In some examples, the member can have a shim portion positioning the cam a distance from the limb or from a first end of the axle. In some examples, the member can define a first surface facing the limb and a second surface facing the limb. In some examples, the member can have an engagement portion coupling the member to at least one of the first end of the axle or the limb. In some examples, the member can include a nesting feature receivable within a groove of the cam.