Cut-Resistant Carry Strap and Bag Panel Assembly
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Solution Overview
Problem
Existing anti-theft constructions for bags, such as handbags and purses, are bulky, inflexible, and lack adequate security, particularly for carry straps and zipper openings, making them susceptible to theft and difficult to assemble, while maintaining a fashionable appearance.
Innovation Solution
A flexible security panel assembly is integrated within the bag, comprising a wire matrix between fabric layers, with uncoupled wire crossings forming closed shapes, and features like locking carabiners and secondary closures for straps and zippers, enhancing cut-resistance and ease of assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metal mesh or wire cage is placed over or within the bag to enhance security, then cut-resistance is improved, but the bag becomes bulky, rigid, and inflexible
Solution Approach 1:
The patent employs a thin wire matrix constructed from flexible wire that can bend and deform with the bag material. The wire matrix is integrated between fabric layers using stitching, creating a flexible security construction that maintains bag flexibility while providing cut-resistance. This approach replaces rigid metal meshes with a flexible wire system that adapts to the bag's movement and form.
Solution Approach 2:
The patent creates a composite structure by combining wire matrix with fabric layers. The wire matrix provides cut-resistance while the fabric layers provide flexibility and durability. This composite construction integrates multiple materials with complementary properties to achieve both security and flexibility, resolving the contradiction between these two requirements.
2Strength
If a wire mesh with crimps is used to provide security, then cut-resistance is improved, but the assembly becomes difficult to manufacture and the structure becomes stiff
Solution Approach 1:
The patent divides the security construction into separate components: a wire matrix, a fabric layer, and a lining layer. These segmented components are assembled in a systematic manner during bag manufacturing, making the process easier and more integrated compared to incorporating rigid metal meshes. The wire matrix can be pre-formed and then stitched into place, simplifying manufacturing.
Solution Approach 2:
The patent replaces the mechanical crimping system with a stitching-based attachment system. Instead of using crimps to secure the wire mesh, the wire matrix is attached to the fabric layer through stitching, which is a more straightforward and manufacturable process. This substitution simplifies the assembly while maintaining the security function.
3Reliability
If traditional security devices like locking carabiners and secondary closures are added to straps and zippers, then security is improved, but the device complexity increases
Solution Approach 1:
The patent combines multiple security functions into an integrated wire matrix construction. The wire matrix serves multiple purposes simultaneously: it provides cut-resistance for the bag body, can be configured to protect straps, and can be integrated with zipper mechanisms. This merging of functions reduces the need for separate security devices and simplifies the overall construction.
Data Source
AI summary
In various embodiments, a carry (or carrying) bag is provided that includes an interior, substantially cut-resistant security panel assembly with a matrix of wires secured between or on one or more flexible material layers. Also in various embodiments, the security panel assembly may be positioned intermediate the bag outside wall and a lining of the bag, and in other embodiments, may also take the form of an expansion panel. Second or secondary locking fasteners are also provided to lock first or primary fasteners to or within the carrying bag, to provide security for compartments and pockets. A strap with one or more security cables, and various locking fasteners, may be attached to the carry bag. Methods for forming such security panel assemblies, expansion panels, and carrying straps are also disclosed.