Fabric Knee Braces for Inflatable Boats
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Solution Overview
Problem
Existing knee braces for whitewater boats, particularly hard shell kayaks, lack adjustability and are not suitable for lightweight inflatable boats like packrafts, limiting control and comfort during navigation.
Innovation Solution
A knee brace design featuring a fabric body with adjustable straps and quick-release buckles, allowing secure attachment to the side wall of inflatable boats, providing adjustable leg support and control while being packable and easy to use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If rigid molded knee braces are used in hard shell boats, then good control of the boat is provided, but adjustability is limited and they cannot be used with inflatable boats
Solution Approach 1:
The patent replaces rigid molded knee braces with flexible fabric knee braces that can be adapted to both hard shell and inflatable boats. The fabric material provides the necessary flexibility and conformability while maintaining control functionality across different boat types.
Solution Approach 2:
The knee brace incorporates adjustable straps with buckles that allow dynamic adjustment of fit and positioning. This enables the same brace to adapt to different user leg dimensions and different boat configurations, transforming a static rigid structure into a dynamic adjustable system.
2Ease of operation
If thigh straps are used in open cockpit kayaks, then some control is provided, but control is limited because force is applied predominately by the user's thigh and shin
Solution Approach 1:
The knee brace is divided into multiple functional segments: a fabric body portion that contacts the knee, multiple adjustable straps for securing, and attachment points for boat integration. This segmentation allows each component to contribute specifically to force distribution and control efficiency.
Solution Approach 2:
The knee brace design positions the fabric body and straps to distribute force across multiple body points (knee, thigh, shin) rather than concentrating it, effectively counterbalancing the limitations of single-point force application and improving overall control capability.
3Reliability
If rigid molded knee braces are used, then good control is provided, but they lack adjustability and cannot accommodate different user leg shapes
Solution Approach 1:
The fabric construction allows the knee brace to flex and conform to various leg shapes and sizes, providing a customized fit for each user while maintaining the structural integrity needed for effective boat control.
Solution Approach 2:
The adjustable straps with buckles enable real-time modification of the brace fit, allowing users to adapt the same brace to different leg dimensions and preferences, transforming a static one-size-fits-all approach into a dynamic customizable system.
Data Source
AI summary
The present disclosure relates generally to knee braces for boats. The knee braces described herein are particularly suitable for use with lightweight, inflatable rafts and kayaks, for example packrafts used in backcountry boating. The knee braces include a fabric body and a plurality of adjustable straps configured to attach the fabric body to a side wall of the boat.