Detachable Shoe Protector Using Flexible Polyurethane Film
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Solution Overview
Problem
Existing shoe protection devices are either cumbersome, unattractive, or detract from the appearance and functionality of the underlying shoe, failing to provide a durable, non-obtrusive, and inexpensive solution for protecting shoes from inclement weather and indoor flooring contamination.
Innovation Solution
A detachable, translucent flexible polyurethane shoe protector with a contoured design featuring a sole, forward lip, rearward cantilevered tab, and lateral sides, made from seamless material, with optional elastic band, tread, and padding for snug fit and effective ground engagement, available in various colors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If heavy shoe protectors are used to protect shoes from inclement weather and flooring contamination, then protection effectiveness is improved, but the protector becomes cumbersome and unattractive
Solution Approach 1:
The patent applies this principle by using a thin, flexible polyurethane film that is transparent and lightweight. This film conforms to the shoe sole and provides protection without the bulk and weight of traditional protectors, directly resolving the contradiction between protection effectiveness and ease of operation.
Solution Approach 2:
The patent applies this principle by making the protector transparent or translucent, allowing the original shoe appearance to show through. This eliminates the aesthetic compromise of traditional protectors while maintaining protective functionality.
2Reliability
If seamless polyurethane material is used to create the shoe protector, then durability and waterproofing are improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies this principle by utilizing the inherent properties of polyurethane material - its durability and waterproofing characteristics - while changing the manufacturing approach to simple molding processes. This allows achieving high reliability without excessive manufacturing complexity.
3Reliability
If the protector is designed to contour the shoe sole with lateral sides and lips, then fit and protection are improved, but device complexity increases
Solution Approach 1:
The patent applies this principle by designing the protector to contour and curve around the shoe sole, with lateral sides and forward/aft lips that follow the natural curvature of the shoe. This provides a snug fit and comprehensive protection while maintaining simplicity through form-following design rather than complex mechanical structures.
Data Source
AI summary
A detachable, flexible shoe protector is disclosed cover for protecting shoes against inclement weather conditions and for protecting carpet and indoor flooring from dirt carried in on shoes used outdoors. In various embodiments, the shoe protectors may be fabricated from transparent or translucent polymers such that the aesthetic appearance of the underlying shoe is still visible. The rigidity and/or thickness of the shoe protector vary from one embodiment to another depending upon the intended use of that embodiment. Some embodiments of the present invention comprise tread to minimize slipping between the shoe protector and an underlying floor or subgrade. Various embodiments of the shoe protector comprise a forward lip and/or an aft cantilevered tab to facilitate ease of use. The shoe cover has a front portion, a rear portion and a sole portion.