Fluid-Bladder Foot Support for Personalized Stability
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Solution Overview
Problem
Conventional athletic footwear lacks effective mechanisms to provide personalized support and stability for varying foot shapes and movements, particularly in areas like the heel, midfoot, and forefoot regions, while also failing to address issues of comfort and breathability.
Innovation Solution
Incorporation of a foam base member with recessed areas for fluid-filled bladders, which include multiple interior chambers at varying pressures, and a flexible upper strap system to secure the foot, enhancing support and stability across different foot regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional athletic footwear uses a uniform sole structure, then manufacturing is simple, but it cannot provide personalized support for varying foot shapes and movements
Solution Approach 1:
The sole structure is divided into multiple independent regions (heel region, midfoot region, forefoot region) with different properties. Each region can be independently configured with varying foam densities, bladder pressures, and material compositions to match the specific support needs of different foot areas, thereby providing personalized support without requiring a completely custom-made shoe for each individual.
Solution Approach 2:
Different regions of the sole are assigned different material properties and structural characteristics. The heel region may use softer foam with higher fluid content for cushioning, while the forefoot region uses firmer foam with lower fluid content for stability. This local differentiation allows each part of the sole to optimize its function for the specific foot region it supports.
2Strength
If conventional footwear uses thick foam material throughout, then comfort and cushioning are improved, but breathability and moisture management deteriorate
Solution Approach 1:
The foam material is formulated with controlled porosity and cellular structure that allows moisture vapor to pass through while maintaining cushioning properties. The porous structure enables breathability by creating pathways for moisture evacuation, preventing the suffocation effect that would occur with solid, non-porous foam materials.
Solution Approach 2:
Fluid-filled bladders are embedded within the foam structure to provide additional cushioning and support. These bladders can be inflated to varying pressures to enhance comfort in specific regions while the fluid content helps regulate temperature and moisture by absorbing excess heat and allowing vapor transmission through the foam matrix.
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 solution provides enhanced support and stability by adapting to individual foot shapes, improving comfort through breathability and moisture management, and controlling foot motion, thereby addressing the limitations of conventional footwear.
Implementation Method 1
The fluid-filled bladder(s) may include one or more interior fluid chambers. When multiple interior fluid chambers are present, they may be at substantially the same pressure (e.g., ±5%) or they may be at different pressures.
Implementation Method 2
The sole structure may be secured to a lower surface of the upper and generally is positioned between the foot and any contact surface. In addition to attenuating ground reaction forces and absorbing energy, the sole structure may provide traction and control potentially harmful foot motion.
Data Source
AI summary
Foot support systems include sole structures, portions of sole structures, drop-in midsole components, insertable sole components (e.g., midsoles or insoles), or the like. The foot support systems may include a foam base member (e.g., made from a relatively thick foam material) and at least one fluid-filled bladder. The fluid-filled bladder(s) may include one or more interior fluid chambers. When multiple interior fluid chambers are present, they may be at substantially the same or different pressures. Additional aspects of this technology relate to articles of footwear that include such foot support systems, such as slides, sandals, and/or other types of footwear.