Inflatable Shoe Insert for Shape Retention
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Solution Overview
Problem
Conventional shoe packaging methods, such as using paper wadding or molded pulp, fail to maintain shoe shape during transportation and storage, leading to deformation and increased weight and cost, while existing inflatable solutions lack versatility in accommodating a range of sizes without custom forms.
Innovation Solution
Inflatable shoe inserts made from multi-ply flexible structures with specific seal patterns and materials, allowing for inflation to maintain shoe shape and adaptability across various sizes, using a packaging and inflation sealing device to produce customized inserts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If paper wadding or molded pulp is used as filler, then the shoe shape is maintained during shipping, but the materials are crushed during transportation and storage, leading to deformation
Solution Approach 1:
The patent changes the physical state of the filler material from solid (paper wadding, molded pulp) to gas-filled flexible structure. The inflatable cushion is inserted in a deflated state and then inflated to expand and maintain shoe shape, providing reliable shape retention that cannot be crushed during transportation and storage.
Solution Approach 2:
The patent uses pneumatic principles by employing an inflatable cushion filled with gas. The cushion is inflated through an inflation opening to expand and provide structural support within the shoe, maintaining the shoe's shape without being susceptible to crushing forces that affect solid filler materials.
2Shape
If molded pulp or crumpled paper is used as filler, then the shoe shape is retained, but the materials carry extra weight and cost
Solution Approach 1:
The patent transitions from heavy solid materials (molded pulp, crumpled paper) to a lightweight gas-filled flexible structure. The inflatable cushion maintains shoe shape while significantly reducing filler weight, as gas has negligible mass compared to solid packaging materials.
Solution Approach 2:
By using gas inflation to create structural support, the patent eliminates the need for heavy solid filler materials. The pneumatic cushion provides adequate shape retention with minimal weight, improving the overall weight characteristics of the packaged shoe.
3Shape
If blow molded shapes are used to fill the shoe cavity, then the shoe shape is maintained, but individual forms must be made for each size, reducing versatility
Solution Approach 1:
The patent employs a dynamic, adjustable solution where the inflatable cushion can be inflated to different volumes and pressures to accommodate various shoe sizes. Unlike static blow-molded forms that require individual tooling for each size, the inflatable cushion adapts its shape and volume through controlled inflation, providing universal applicability across different shoe dimensions.
Solution Approach 2:
The inflatable cushion serves as a universal filler solution that can be used across multiple shoe sizes and styles. A single deflated cushion design can be inflated to fit different shoe cavities, eliminating the need for size-specific molded forms and enhancing manufacturing versatility.
4Reliability
If conventional packaging materials are used, then the shoe is protected during shipping, but consumer appeal and marketing value are reduced
Solution Approach 1:
The patent transforms the packaging material from traditional solid fillers to a modern pneumatic system, enhancing consumer appeal through innovative technology. The inflatable cushion represents a more advanced, environmentally friendly, and cost-effective solution that improves marketing value while maintaining protective functionality during shipping.
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 inflatable inserts effectively preserve shoe shape during shipping, reduce deformation, and offer cost savings by using lightweight materials, while being adaptable to fit different shoe sizes and shapes, enhancing consumer appeal and marketing.
Implementation Method 1
The inflatable chambers can be inflated with air or another gas and thereafter sealed to inhibit or prevent the release of the air or gas
Implementation Method 2
The seals can be formed simultaneously with inflation, so as to capture air therein, or prior to inflation to define a film configuration having inflatable chambers
Data Source
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AI summary
An inflatable shoe insert assembly may have an elongated lower element formed of opposing, flexible, polymeric plies that are sealed together to define a tubular inflation chamber that is narrow and elongated and is configured to seal inflation fluid therein; a shoe-upper element formed of opposing, flexible, polymeric plies that are sealed together to define a shoe-upper inflation chamber configured to seal inflation fluid therein; wherein lower and upper inflation chambers are configured and dimensioned to fit together into a shoe and support each other in an installed position to cooperatively support and maintain the shape of the shoe upper.