Rotatable Handle System for Sporting Implements
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Solution Overview
Problem
Baseball and softball batters experience forearm fatigue due to opposing forces from their hands during the swing, as the bottom hand pulls and the top hand pushes, requiring hand rotation to achieve the power position, which can lead to inefficiencies in generating power and control.
Innovation Solution
A rotatable handle system in sporting goods like bats and lacrosse sticks, where the first handle section is connected to the second handle section via a bolt or bearing system, allowing for 360-degree rotation, facilitating improved hand positioning and power generation without requiring active hand rotation, thus reducing fatigue and enhancing control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the bottom hand pulls and the top hand push during the swing, then the palms can be positioned to face opposite directions in the power position, but this opposing force causes forearm fatigue
Solution Approach 1:
The handle is divided into two separate handle sections that can rotate independently relative to each other, allowing each hand to maintain its gripping position while the sections rotate to achieve proper palm orientation without requiring opposing forces from the hands
Solution Approach 2:
The handle sections are made dynamically rotatable rather than fixed, enabling the handle to automatically adjust to the power position during the swing. This dynamic adjustment eliminates the need for hands to exert opposing forces to maintain positioning, thereby reducing forearm fatigue
2Ease of operation
If batters rotate their hands during the swing to achieve the power position, then proper hand positioning is accomplished, but this requires active hand rotation that reduces power generation efficiency
Solution Approach 1:
Instead of requiring the hands to actively rotate during the swing, the invention inverts the approach by allowing the handle sections to rotate passively in response to the natural swing motion. This eliminates the active hand rotation requirement and preserves power generation efficiency
Solution Approach 2:
The rotatable handle system automatically positions the hands in the power position through the swing motion itself, without requiring additional active rotation from the batter. The system serves itself by utilizing the swing's natural mechanics to achieve proper hand positioning
3Adaptability or versatility
If the handle sections are rotatably connected to allow 360-degree rotation, then hand positioning flexibility is improved, but the device complexity increases
Solution Approach 1:
The handle is segmented into two independent rotatable sections, each capable of 360-degree rotation relative to the other. This segmentation provides maximum positioning flexibility while keeping each individual section simple in design
Solution Approach 2:
The rotatable connection allows the handle to dynamically adapt to different swing styles and positions. The simplicity of the rotatable joint design maintains low complexity while achieving high adaptability for various hand positioning requirements
Data Source
AI summary
A sporting-good implement, such as a ball bat or a lacrosse stick, includes a first handle section rotatably connected to a second handle section. The second handle section may be attached to or integral with a tapered region or barrel region of a ball bat, or with a shaft section or head of a lacrosse stick, or with another sporting-good feature. This rotatable engagement allows the relative position of the user's hands to change during the course of a swing, shot, or pass, ideally placing the user's hands in a position to generate improved power or control.