Cut-Resistant Locking Bag with Steel Cable Strap

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Solution Overview

Problem

Conventional bags that lock are vulnerable to theft due to their textile construction, which can be cut or torn, and are not aesthetically or comfortably designed for everyday use, as they are typically made of stiff, abrasive materials.

Innovation Solution

A bag made from a cut-resistant textile, such as Cut-Tex PRO, combined with a tubular nylon strap containing a braided steel cable for enhanced security and comfort, and a hidden compartment to maintain aesthetics, allowing the bag to be locked closed and secured to a fixed object.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If conventional textile construction is used for bags, then the bag is flexible and comfortable to carry, but the contents are vulnerable to being cut or torn open

Engineering Contradiction:

Improveresistance to cutting and tearingVSAvoidvulnerability to theft

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The patent applies composite materials by combining conventional textile with steel cable reinforcement. The steel cable is integrated into the textile structure at critical areas (straps, seams, closure points) to create a composite construction that maintains the flexibility and comfort of textile while adding cut and tear resistance to prevent theft.

Inventive Principle:

Principle #40Composite materials

2Reliability

If heavy woven canvas or nylon textile is used for locking bags, then the bag provides security through locking mechanisms, but the bag becomes stiff, rough, and abrasive

Engineering Contradiction:

Improvesecurity through lockingVSAvoidcomfort to carry

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent applies local quality by using soft, flexible textile for the main bag body that provides comfort, while strategically reinforcing only critical areas (straps, seams, closure points) with steel cable. This localized reinforcement maintains overall comfort while providing security where needed most.

Inventive Principle:

Principle #3Local quality

3Reliability

If locking mechanisms are added to bags, then the contents are protected from tampering, but the bag becomes vulnerable to having the entire bag taken

Engineering Contradiction:

Improveprotection from tamperingVSAvoidtheft of entire bag

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies preliminary action by pre-integrating steel cable reinforcement into the bag structure during manufacturing, creating an inherently strong construction that deters theft before any theft attempt occurs. The reinforced straps and seams make the entire bag difficult to cut or tear away, preventing abduction of the complete bag.

Inventive Principle:

Principle #10Preliminary action

4Strength

If steel cable is exposed in the strap, then the strap has high tensile strength, but the bag loses aesthetic appeal

Engineering Contradiction:

Improvetensile strength of strapVSAvoidaesthetic appeal

Core Design Contradiction:

StrengthVSShape

Solution Approach 1:

The patent applies the nesting principle by placing the steel cable inside a textile sheath or cover. The steel cable is nested within the textile material, allowing the aesthetic textile surface to be visible while the steel cable provides structural strength underneath. This layered construction maintains both appearance and strength.

Inventive Principle:

Principle #7Nested doll (Nesting)

Data Source

PatentUS9986808B2Locking drawstring bag

Publication Date: 2018.06.05 NOLK ENTERPRISES INC

AI summary

An improved tote bag with a locking mechanism is disclosed. The bag provides a high degree of security yet still remains soft, unstructured, and fashionable.