Golf Grip Offset Bore for Lie Angle Adjustment
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Solution Overview
Problem
Conventional golf putter grips often lead to incorrect hand positioning, resulting in inconsistent and inaccurate putting due to excessive grip tension, which affects the golfer's ability to strike the ball effectively.
Innovation Solution
A golf club grip design that increases the effective lie angle without altering the actual lie angle between the club shaft and head, featuring an elongated shape with a resilient and deformable material, offset shaft-receiving bore, and finger grooves to promote correct hand alignment and reduce pressure, thereby improving striking precision and consistency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional putter grips are used with standard surface features, then the grip structure remains simple, but the golfer's hand positioning becomes incorrect leading to inconsistent putting
Solution Approach 1:
The grip features an offset shaft-receiving bore that creates an asymmetric structure, with the bore positioned laterally displaced from the grip's longitudinal axis. This local structural modification provides specific geometric guidance for hand placement, enabling correct hand positioning through the inherent asymmetry of the offset bore rather than requiring complex external features or adjustments.
Solution Approach 2:
The offset shaft-receiving bore creates an asymmetric grip structure that naturally guides the golfer's hands into the correct positioning. The lateral displacement of the bore from the longitudinal axis establishes an asymmetric geometry that prevents incorrect symmetric hand placement, thereby improving hand positioning accuracy through structural asymmetry alone without adding device complexity.
2Ease of operation
If the grip lie angle is increased to improve hand positioning, then the effective lie angle increases improving accuracy, but the actual lie angle between shaft and head changes altering club performance
Solution Approach 1:
The invention separates the hand positioning function from the lie angle function. The offset shaft-receiving bore in the grip handles the hand positioning and effective lie angle adjustment, while the actual lie angle between shaft and club head remains independent and unchanged. This segmentation allows each parameter to be optimized independently without interfering with the other.
Solution Approach 2:
The offset shaft-receiving bore acts as an intermediary element that mediates between the golfer's hands and the club shaft. By positioning the bore offset from the longitudinal axis, it creates the effective lie angle adjustment needed for proper hand alignment without directly changing the actual lie angle between the shaft and club head, thus protecting manufacturing precision while improving hand alignment.
3Ease of operation
If the grip material is made resilient and deformable to reduce hand pressure, then comfort and feel improve, but grip stability may decrease
Solution Approach 1:
The grip utilizes resilient and deformable material that changes its physical parameters under load. The material's elasticity allows it to deform under hand pressure, distributing the pressure comfortably across the hand, while its recovery properties maintain grip stability. This parameter change enables the grip to adapt to the golfer's hand while preserving structural integrity.
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 grip design enhances ulnar deviation, reduces club face rotation, and decreases hand pressure, leading to improved accuracy and feel during long putts by emphasizing the scapulo-thoracic area as the fulcrum of movement, resulting in consistent and precise golf swings.
Implementation Method 1
featuring an elongated shape with a resilient and deformable material, offset shaft-receiving bore, and finger grooves to promote correct hand alignment and reduce pressure
Data Source
AI summary
A golf club such as a putter having a club shaft with an upper end and a lower end and a longitudinal axis; a club head on a lower end of the shaft and with a lie angle between the shaft and the club head; and a grip on an upper end of the shaft. The grip provides an increased effective lie angle. The lie angle between the shaft and the club head is in the range from about 67° to about 75° and the effective lie angle is in the range from about 76° to about 85°. The grip improves the performance of the golfer.


