Modified Cycloid Golf Ball Dimple Profiles for Flight Stability

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Solution Overview

Problem

Existing golf ball dimple designs lack sufficient variability in cross-sectional profiles, limiting aerodynamic performance and flight stability.

Innovation Solution

Employing a modified cycloid curve to define the cross-sectional dimple profile, decoupling dimple diameter and chord depth, which allows for greater design flexibility and improved aerodynamic characteristics by enhancing the intersection angle and turbulent boundary layer acceleration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional dimple profiles are used, then manufacturing is simple, but aerodynamic performance and flight stability are limited

Engineering Contradiction:
Improveaerodynamic performanceVSAvoiddimple profile complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies parameter changes by using a modified cycloid curve defined by specific mathematical equations (x = a*(θ - sinθ), y = a*(1 - cosθ)) with adjusted parameters to create a dimple profile that optimizes aerodynamic performance. The modification of the standard cycloid curve allows for controlled variations in curvature and depth that enhance flight stability while maintaining manufacturability.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent utilizes curvature principles by employing a cycloid curve that naturally provides continuous variation in radius of curvature along the dimple profile. This curved geometry creates a smooth transition in the dimple shape, which is essential for optimizing airflow patterns and reducing turbulence, thereby improving aerodynamic performance without excessive complexity.

Inventive Principle:
Principle #14Spheroidality (Curvature)

2Adaptability or versatility

If dimple diameter and chord depth are coupled, then manufacturing is simpler, but design flexibility is reduced

Engineering Contradiction:
Improvedesign flexibilityVSAvoidmanufacturing complexity
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent applies segmentation by separating the control of dimple diameter and chord depth into independent parameters within the modified cycloid equation system. This allows designers to independently optimize each parameter for specific aerodynamic requirements without being constrained by coupled manufacturing processes, thereby increasing design flexibility while maintaining manufacturability through standardized forming techniques.

Inventive Principle:
Principle #1Segmentation

3Reliability

If standard cycloid curve is used, then mathematical simplicity is maintained, but aerodynamic characteristics are suboptimal

Engineering Contradiction:
Improveaerodynamic characteristicsVSAvoidcurve definition complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent modifies the standard cycloid curve by adjusting the mathematical parameters and equations to create an optimized dimple profile. The modified cycloid uses specific parameter relationships (x = a*(θ - sinθ), y = a*(1 - cosθ)) that enhance aerodynamic characteristics by controlling the curvature and depth variations, achieving superior performance while maintaining reasonable mathematical complexity.

Inventive Principle:
Principle #35Parameter changes

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

The modified cycloid curve design reduces drag force and improves flight stability by creating a sharp drop in air flow, resulting in enhanced aerodynamic performance.

Implementation Method 1

enhancing the intersection angle and turbulent boundary layer acceleration

Methodology Applied
Scientific EffectTurbulent boundary layer: Boundary Layer

Implementation Method 2

reduces drag force and improves flight stability by creating a sharp drop in air flow

Methodology Applied
Scientific EffectDrag reduction: Drag

Data Source

PatentUS12453905B2Golf ball dimple profile defined by modified cycloid curve
Publication Date: 2025.10.28 ACUSHNET CO
  • US12453905B2 patent drawing
  • US12453905B2 patent drawing
  • US12453905B2 patent drawing

AI summary

Various aspects of a dimple pattern for a golf ball are disclosed herein. In one aspect, the golf balls disclosed herein can include dimples having a profile that is defined by a modified cycloid curve.