Pool Cue Shaft Stability via Segmented Composite Construction
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Solution Overview
Problem
Conventional pool cues lack stability and accuracy under impact and flex conditions, often bending or warping when used to strike billiard balls, affecting player performance.
Innovation Solution
A pool cue shaft assembly featuring a thermoplastic support body with radially extending fins and longitudinal grooves, where inlay members are permanently coupled to the support body, providing a stable and true striking surface with improved alignment aids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional pool cue shafts are used, then the structure is simple and easy to manufacture, but the shaft bends or warps under impact and flex conditions, reducing stability and accuracy
Solution Approach 1:
The shaft assembly is segmented into multiple functional components: a support body, multiple inlay members (at least three), and alignment features. The inlay members are distributed around the support body perimeter, dividing the shaft into distinct structural zones that collectively enhance stability while maintaining manufacturability through modular assembly
Solution Approach 2:
The shaft assembly uses composite construction by combining the support body with multiple inlay members made of different materials. The inlay members are coupled to the support body to form a composite structure that leverages the properties of each material to resist bending and warping under impact and flex conditions
2Strength
If the shaft structure is simplified for ease of manufacture, then production is easier, but the shaft lacks the structural integrity to maintain straightness under impact
Solution Approach 1:
The shaft is divided into a support body and separate inlay members that can be manufactured independently using standard processes, then assembled together. This segmentation allows each component to be optimized for its specific function while maintaining ease of manufacture through modular construction
Solution Approach 2:
The inlay members are strategically positioned at specific locations around the support body perimeter to provide localized reinforcement where needed. This allows the shaft to have enhanced strength at critical areas while keeping the overall structure manufacturable with conventional techniques
3Measurement precision
If inlay members are added to improve alignment and stability, then shot accuracy improves, but the device complexity increases
Solution Approach 1:
The inlay members are configured to provide visual alignment indicators that assist players in aiming. These alignment features may utilize color contrasts or visual patterns on the inlay members to enhance shot accuracy through improved visual cues, adding functional value without excessive complexity
Solution Approach 2:
The inlay members serve multiple functions simultaneously: they provide structural reinforcement to prevent shaft warping, enable visual alignment for improved accuracy, and can be configured to indicate shaft orientation. This multi-functionality reduces the need for separate components, managing complexity while delivering multiple benefits
Data Source
AI summary
A pool cue shaft assembly includes a thermoplastic support body extending along a shaft axis from a tip end to a collar end. The support body defines at least three fin members extending radially from a geometric center of the support body. Spaces between the radially extending fin members define at least three longitudinal grooves. At least three inlay members are coupled to the thermoplastic support body. Each inlay member is disposed within a respective longitudinal groove and extends from the tip end to the collar end.