Expandable Boot Insert for Larger Calf Fit
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Solution Overview
Problem
Articles of clothing, particularly footwear, often fail to fit individuals with larger calves due to a mismatch in circumference, leading to discomfort, tightness, and potential damage to the boot material from forced closure.
Innovation Solution
An expandable insert made of flexible materials like nylon, elastic, or spandex, which integrates with the boot's fastening system to increase the circumference, allowing for a secure fit without altering the boot's structure, and can be removable for size adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the leg-covering portion of the boot is forced to close about a larger calf, then the boot can be worn, but tightness in the leg and pinched skin in the fastener occur
Solution Approach 1:
The insert acts as an intermediary element placed between the wearer's calf and the boot's leg-covering portion. It includes a body portion that contacts the calf and fastening structures that interface with the boot's existing fastener system, thereby mediating the fit between mismatched sizes without forcing the boot to close tightly on the calf.
Solution Approach 2:
The solution segments the boot system by adding a separate, removable insert component. This insert is divided into a body portion (contacting the calf) and fastening structures (interface with boot), allowing independent optimization of each component's function and enabling size adjustment without modifying the original boot structure.
2Ease of operation
If the leg-covering portion is forced to close tightly, then the boot can be worn, but stress on the fastener and potential ripping of boot material or breakage of fastener occurs
Solution Approach 1:
The insert serves as a protective intermediary that absorbs the dimensional mismatch between the boot and wearer's calf. By placing the insert inside the boot, the fastener structures experience reduced stress because they are fastening the insert rather than forcing the boot material to stretch tightly over a larger circumference.
Solution Approach 2:
The insert provides beforehand cushioning by being pre-positioned inside the boot to accommodate the larger calf circumference. This prevents excessive stress from being transmitted to the fastener and boot material during closure, thereby protecting against potential ripping or breakage before it occurs.
3Ease of manufacture
If standard sizing is used, then manufacturing is simple, but individuals with larger calves cannot fit into boots
Solution Approach 1:
The solution segments the sizing adaptation into a separate, removable insert component rather than requiring custom-sized boots. This allows standard boots to be manufactured unchanged while the insert provides the necessary size accommodation, maintaining ease of manufacture for the boot itself while adding adaptability for larger calves.
Solution Approach 2:
The insert is designed as a universal solution that can be used with various boot styles and sizes. By making the insert removable and independently adjustable, it provides multi-functionality that accommodates different calf sizes without requiring different boot designs, thereby maintaining standard manufacturing processes while expanding fit options.
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 insert provides a comfortable and secure fit by expanding the boot's circumference to accommodate larger calves, reducing the risk of damage to the boot and allowing for easy size adjustments as needed.
Implementation Method 1
The flexible material can include at least one of nylon, nylon canvas, an elastic material, a leather material, a spandex material...
Data Source
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AI summary
Systems and methods associated with an insert (100) for expanding an article of clothing, including an article of footwear, are described. Articles of clothing incorporating such inserts are also described. The insert includes a body portion (105) defining a first edge (110a), a second edge (110b), and a perimeter. Fasteners (125a, 125b) are disposed along the first and second edges. The fasteners couple to fastening structures of the article of clothing, and the perimeter of the body increases a size or circumference of the article of the clothing. The material for the insert, fasteners, fastening structures, or portions thereof can be selected to be decorative or to match, complement, correspond to, or coordinate with articles of clothing and/or accessories.