Putter Head Sole Low Specific Gravity Member for Overspin Control
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Solution Overview
Problem
Existing golf club heads for putters with reverse loft angles often fail to consistently apply overspin, leading to undesirable ball behavior such as backspin and bounding, which destabilizes the rolling trajectory and reduces the chances of hitting the cup.
Innovation Solution
A golf club head with a metal main body and a low-specific-gravity member on the sole surface, positioned to enhance overspin and stability, featuring a hollow design and specific weight distribution to promote favorable rolling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a reverse loft angle of 0 to 5 degree is used, then overspin can be applied to the ball, but the ball is pressed against the surface of earth and apt to be bound by rebound
Solution Approach 1:
The patent changes the physical parameters of the club head by incorporating a low specific gravity member (such as foam or hollow structure) in the sole portion, altering the center of gravity position and moment of inertia to control the impact dynamics and reduce ball bounding while maintaining overspin
Solution Approach 2:
The patent uses composite construction by combining metal (for strength and durability) with low specific gravity materials (such as foam or hollow structures) in the sole portion, creating a composite club head that achieves both structural integrity and modified impact characteristics to prevent ball bounding
2Length of moving object
If the ball gets away from the surface of earth through jumping or bounding, then the putting line becomes unpredictable, but the ball trajectory distance varies
Solution Approach 1:
The patent modifies the moment of inertia and center of gravity position through the low specific gravity member in the sole, changing the impact dynamics to ensure consistent ball contact and rolling behavior, making the putting line predictable while maintaining adequate rolling distance
3Ease of operation
If back spin is applied to the ball, then the ball slips instead of rolling, but the frictional force eventually ceases the back spin and creates overspin
Solution Approach 1:
The patent changes the impact parameters through the low specific gravity member design to optimize the spin characteristics, achieving immediate overspin without excessive backspin, thereby ensuring the ball rolls smoothly from impact without slipping and maximizing rolling distance
Data Source
AI summary
Putter head 2 having a head main body 4 constructed with a metal, and a member having low specific gravity 6 constructed with a material having a specific gravity lower than that of the metal constructing the head main body 4. The member having low specific gravity 6 is provided on the sole surface 16 side of the head main body 4. At least a part of the sole surface 16 is constructed with the member having low specific gravity 6. Preferably, the head main body 4 has a hollow part t. Preferably, the center of gravity g2 of the member having low specific gravity 6 is located to get closer to the face side than the center of gravity g1 of the head does. The golf putter according to the present invention has the putter head 2, a shaft 3, and a grip. The present invention provides a golf club head for a putter and a golf putter which achieve favorable rolling.