Golf Club Head Shape With Heel-Biased CG for Slice Reduction
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Solution Overview
Problem
Players experience difficulties in reliably hitting a golf ball in an intended and desired direction and/or with an intended and desired flight path.
Innovation Solution
Golf club heads are configured with mass and volume distribution to alter the center of gravity, positioning more mass and/or volume towards the heel side, rear side, or rear heel side to aid in squaring the club head during a swing and imparting a desired trajectory to the golf ball.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mass is distributed evenly throughout the club head, then manufacturing is simpler, but the golfer cannot reliably control ball direction and trajectory
Solution Approach 1:
The patent applies asymmetry by positioning the center of gravity offset from the geometric center of the club head, specifically toward the heel side and rear portion. This asymmetric mass distribution creates intentional imbalance that generates corrective moments during the swing, helping golfers square the club face at impact and control ball direction, thereby resolving the contradiction between manufacturing simplicity and directional reliability.
Solution Approach 2:
The patent implements local quality by concentrating mass in specific regions (heel side and rear portion) rather than distributing it uniformly. This localized mass concentration creates specific functional effects in those regions, generating torque and moment forces that assist in squaring the club face and controlling trajectory, thus improving reliability without requiring complex overall restructuring.
2Reliability
If mass is concentrated towards the heel side and rear, then slicing is reduced and trajectory is improved, but the center of gravity positioning becomes more complex
Solution Approach 1:
The patent uses counterweight principles by positioning mass in the heel side and rear portion to create a center of gravity that generates corrective moments during the swing. This strategic mass placement acts as a counterbalancing mechanism that automatically helps square the club face at impact, reducing slicing tendencies and improving trajectory control without requiring additional active mechanisms.
3Object-generated harmful factors
If the center of gravity is positioned towards the heel side, then slice reduction is achieved, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies parameter changes by specifying the center of gravity position in terms of relative location (offset from geometric center toward heel side and rear) rather than absolute coordinates. This approach allows manufacturers to achieve the desired slice-reducing effect by controlling the relative position and distribution of mass, rather than requiring extremely precise absolute positioning, thus reducing manufacturing precision requirements while maintaining effectiveness.
Data Source
AI summary
Aspects of this disclosure relate to a golf club head which includes a wood type golf club head body including a ball striking face portion at a front side thereof, a rear side opposite the front side, a crown portion, and a sole portion. Further, the sole or crown or rear portion of the golf club head body may be configured so that the golf club head body includes a bump portion which protrudes from the sole or crown or rear portion and an indented portion which recedes into the sole or crown or rear portion and creates a recess in the sole or crown or rear portion of the golf club head body. Further, the bump portion and the indented portion may be configured so that a center of gravity of the club head body is nearer to one of the heel edge of the club head body and the toe edge of the club head body.